On March 15, 2026, Vitalik Buterin posted on X, publicly calling for a reassessment of the separation design of the beacon chain (consensus layer) and execution clients formed after the Ethereum "merge." This statement quickly spread within the technical community and the media. Currently, Ethereum nodes generally need to run two sets of daemon processes simultaneously to complete the functions of consensus and execution, significantly raising complexity compared to a single-process model, resulting in frequent complaints about the experience for ordinary users managing their own nodes. A debate surrounding the tension between the early commitment to “maximizing decentralization” and the engineering complexity in reality has been brought back to the forefront, focusing on whether to adhere to ideals or compromise with technology.

The Gap from a Home Computer to Two Sets of Processes

● Early Vision: At the birth of Ethereum, it repeatedly emphasized the vision that “anyone can run a node on a home computer,” viewing full nodes as the cornerstone of decentralization. The narrative at that time was that as long as users were willing to contribute bandwidth and storage, they could participate in validating the network and safeguarding protocol rules. This low-threshold participation was packaged as a core symbol against centralized finance and platform monopolies. The ideal Ethereum resembled a global computer supported by countless living room computers.

● Realistic Threshold: After the merge, Ethereum switched to PoS and established a beacon chain + execution layer dual-client architecture, requiring node operators to run both a consensus client and an execution client simultaneously. Compared to the previous “one client runs everything” model, the installation steps are now broken down into segments, and version management, interdependencies, and error troubleshooting have become substantially more complicated. Ordinary users without a technical background can easily “fall into traps” during the configuration and upgrade processes and are often discouraged.

● Communication Complexity: Multiple media outlets, such as PANews and TechFlow, reported that a stable and continuous communication is required between the two daemon processes; once network fluctuations, improper port configurations, or version incompatibilities occur, it may lead to unsynchronized consensus and execution, resulting in penalties or offline consequences. Feedback from users at Jinse Finance and Planet Daily points to the same issue: the dual-process solution theoretically enhances modularity but in practice turns self-hosting into a “semi-professional job” that requires ongoing maintenance.

After the Merge: A Structure and Users Paying for Scalability

● The Original Intent is Expansion and Security: The separation of the beacon chain and the execution layer was a key part of the "merge" design, with the core goal of optimizing for security and scalability by separating consensus logic and execution environment. The consensus layer focuses on validating blocks and maintaining the correctness of on-chain states, while the execution layer focuses on transaction execution and EVM logic, enabling developers to continuously evolve on the execution layer without touching the consensus core, thus reducing systemic risks.

● Modular Trade-Offs: This layered design theoretically brings the benefits of modularity—the client implementations can compete in parallel at their respective layers, facilitating replacement and iteration, allowing the ecosystem to experiment more on the execution side. However, the costs are also apparent: nodes are no longer a singular, well-packaged program but rather a combination of two sets of tightly coordinated software, increasing deployment steps, monitoring dimensions, and troubleshooting paths, making “maintainability” shift from an inherent property of the protocol to a requirement of personal skills for node operators.

● Potential Backlash Against Decentralization: On paper, layering and multiple clients help avoid single points of failure and prevent the protocol from being locked to a single implementation, but in practice, the complex architecture is quietly changing who can become a node operator. The increased operational threshold means more people are turning to third-party hosting or staking services, gradually concentrating power with entities holding substantial stakes. The network's degree of decentralization and censorship resistance faces erosion risks—creating an implicit tension with Ethereum's initial intention to have “anyone able to run a node” written into its value narrative.

Vitalik Speaks Out: What Should Ethereum Simplify and Give Up

● Publicly Questioning Dual-Process Complexity: TechFlow cited Vitalik’s statement that “the communication complexity of two daemon processes contradicts Ethereum's goal of simplifying node operation,” directly pointing out the contradiction between the current architecture and early vision. He did not deny the entire value of layering but focused on the issues with the node experience and operational path: whether the complexity incurred for modularity has exceeded what was originally acceptable.

● Raising Questions Instead of Providing Solutions: From the整理 by multiple media outlets, this post seems more like a call to “re-examine” rather than presenting a complete technical roadmap. Vitalik emphasizes the need to discuss whether the current design still serves the goals of this stage, rather than immediately pushing for concrete replacement solutions. This cautious attitude suggests the community is quite far from “restructuring,” leaning more towards initiating a public debate about priorities and trade-offs.

● Why Look Back Now: Several years have passed since the merge, and the beacon chain architecture has gradually stabilized; being personally pointed out by the founder at this moment carries symbolic significance. On one hand, enough diverse samples have accumulated on the practical effects of the PoS system and dual-client model, and media and community have amplified the issues with the node experience multiple times; on the other hand, the comparative advantages of competitive public chains regarding node thresholds and developer experiences are becoming increasingly apparent. If Ethereum continues to ignore user pain points, it risks losing points on “infrastructure availability.”

Who Raised the Threshold for Ordinary Users' Node Dreams

● Reality of Operational Difficulty: For ordinary users, self-hosting nodes is no longer as simple as “installing a program and clicking a few configurations,” but requires understanding the role divisions of the consensus client and execution client, correctly configuring ports and keys, and coordinating versions during upgrades. For those lacking system management experience, a single configuration mistake could lead to node disconnections or reward losses, causing many users, who initially had a trial mindset, to gradually give up during the actual operation.

● Operational and Learning Costs: User complaints organized by media outlets like Jinse Finance center around three aspects: first, the pressure of ongoing maintenance is high, requiring monitoring of two processes, handling logs, and addressing anomalies; second, learning costs are high, necessitating an understanding of a new set of terminology and toolchains; third, troubleshooting is difficult, often making it hard to quickly determine whether the issue lies in the consensus layer or execution layer. These cumulative factors transform self-hosting from a technical ideal into a “small DevOps project,” distancing it from the narrative of “anyone can participate.”

● The Impact on Staking and Governance: When the threshold for self-hosting nodes is raised, many potential validators turn to staking service providers or centralized platforms, naturally increasing the concentration of staking. While network security is nominally still protected by PoS, in reality, control power gradually concentrates among a few operational entities. For on-chain governance and protocol evolution, this means voting and consensus are more restricted by the positions of a few large node operators, pushing ordinary token holders from being “network participants” to “being served.”

Other Chains Only Need One Client: Should Ethereum Bow to Reality?

● The Intuition of a Single Client Mode: Looking at other mainstream public chains, most still utilize a “single client process” node model, where node operators only need to deploy and maintain one set of software to participate in consensus and execution. This model may sacrifice some modularity and implementation redundancy in theory but appears more straightforward in practical use—easy installation, clear upgrade paths, and no need to manually bridge or coordinate communication details between different layers.

● Ethereum’s Unique Complexity: Ethereum’s beacon chain + execution layer architecture possesses its own logical advantages in system resilience and security but has also created a “unique landscape” in terms of operational complexity. For users and developers comparing multi-chain ecosystems, the node operation experience has become an invisible metric for evaluating a chain's “friendliness”—as other chains attract participants with a smoother node experience, whether Ethereum's technical ideals are still sufficient to offset the friction in daily use is becoming an increasingly realistic question.

● Voting with Feet in the Multi-Chain Era: In a landscape of coexisting multi-chains, users and developers do not need to engage in complex ideological games; they can directly vote with “node experience” and “development thresholds.” Chains that are easy to operate, have clear documentation, and low error costs are more likely to win over incremental users. If Ethereum’s separated architecture cannot significantly improve usability while maintaining its advantages, it may see some participants with limited technical capabilities but considerable funds migrating to ecosystems with smoother experiences in the long term.

Rewrite the Architecture or Rewrite the Commitment: Ethereum’s Next Step

The debate surrounding the separation of the beacon chain and execution client architecture in Ethereum is essentially a concentrated eruption of the long-standing tug-of-war between “maximizing decentralization” and “engineering feasibility.” On one side are the steadfast commitments to a multi-client, modular, and highly flexible technical vision, and on the other side are the real pain points ordinary users face in operation, maintenance, and learning, leading to concentrated staking and a sinking power of governance. Vitalik’s public proposal to revisit the current design indicates that the technical pathway is not an untouchable scripture, but so far, there have been no widely accepted specific improvement solutions within public information, nor any clear timeline to refer to.

In the future, if Ethereum wants to lower the node threshold while maintaining scalability, it may need to advance on two fronts at both architecture and product layers: reassessing which complexities must be exposed to node operators and which can be better abstracted and encapsulated without sacrificing security; compressing the “mental overhead” of operation and communication under the ideal of not giving up on multi-client. This is both a test of early commitments and a response to real competitive pressures. Whether Ethereum will adjust its underlying architecture or “patch commitments” through progressive engineering improvements will depend on how the community redraws lines between ideals and reality in the near future.

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