Vitalik calls for a ‘garbage collection’ function to stop Ethereum bloat
19.01.2026
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Vitalik Buterin warns that Ethereum’s push to add new features while preserving backward compatibility is inflating protocol complexity, calling for a “garbage collection” process.
Vitalik calls for a ‘garbage collection’ function to stop Ethereum bloat
Ethereum co-founder Vitalik Buterin is calling out the protocol's bloat problem — and it's getting real. He's warning that endless feature additions without removing old code is making Ethereum a messy, complex beast that threatens its core promise of trustlessness.
In a Sunday post on X, Buterin dropped the truth bomb: "Even if a protocol is super decentralized with hundreds of thousands of nodes, and it has 49% byzantine fault tolerance, and nodes fully verify everything with quantum-safe peerdas and starks, if the protocol is an unwieldy mess of hundreds of thousands of lines of code and five forms of PhD-level cryptography, ultimately that protocol fails."
Here's why complexity kills Ethereum's soul:
- • Weakens trustlessness — users have to rely on "high priests" to explain what the protocol actually does
- • Fails the walkaway test — rebuilding high-quality clients becomes impossible if existing teams disappear
- • Erodes self-sovereignty — even tech-savvy users can't inspect or reason about the system themselves
Buterin urges "garbage collection"
The root problem? Protocol changes are judged by how disruptive they are to existing systems, creating a bias toward additions over subtractions. Backward compatibility dominates, and the codebase just keeps growing.
Buterin's solution: Build an explicit "simplification" or "garbage collection" function into Ethereum's development process. The goal? Reduce total lines of code, limit complex cryptography, and introduce more invariants — fixed rules that make client behavior predictable.
He points to past cleanups as proof it works: The shift from proof-of-work (PoW) to proof-of-stake (PoS) was a massive reset. Recent gas cost reforms replace arbitrary rules with clearer resource usage links. Future moves could demote rarely used features from core protocol to smart contracts, lightening the load for client devs.
Solana Labs CEO prefers a different approach
Meanwhile, Solana Labs CEO Anatoly Yakovenko is taking the opposite stance — he says Solana must "remain in constant motion" or risk irrelevance. He argues continuous iteration is essential for survival, even without a single group driving changes.
But Buterin's vision is different: Ethereum should eventually pass the "walkaway test," reaching a point where it can run securely for decades without ongoing developer intervention. Two blockchain philosophies colliding — simplify and stabilize vs. evolve or die.
#PoS#blockchain#Decentralization#Protocol bloat#smart contracts
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