Vitalik Buterin Challenges Layer 2s as Ethereum Mainnet Reclaims Users
Ethereum co-founder Vitalik Buterin has issued a pointed message to Layer 2 (L2) developers, warning that the original rationale behind many rollups is losing relevance as Ethereum’s base network regains momentum.
Recent data highlights a sharp reversal in user behavior. Monthly active addresses across Layer 2 networks have dropped from 58.4 million in mid-2025 to roughly 30 million by February 2026. Over the same period, Ethereum’s mainnet more than doubled its activity, with active addresses climbing from around 7 million to 15 million. The shift suggests users are migrating back to Layer 1 as transaction costs fall and capacity expands.
Ethereum’s renewed strength is being driven by record-low transaction fees and expectations that gas limits will continue rising through 2026. These improvements allow the base layer to process far more transactions independently, reducing the need for Layer 2s as simple cost-saving tools. In a detailed post, Buterin argued that the early vision of L2s as “branded shards” compensating for a constrained Layer 1 no longer reflects today’s reality.
Security has also become a sticking point. Many Layer 2 projects have struggled to reach advanced rollup security standards, particularly stage 2 targets. Some operators have openly acknowledged that they may never pursue these milestones, instead prioritizing regulatory requirements that demand centralized control. Buterin warned that this direction conflicts with Ethereum’s core principles of permissionless and trustless design.
Market performance mirrors this uncertainty. Major Layer 2 tokens fell between 15% and 30% in January 2026, and the sector’s total market capitalization stands at about $7.95 billion as of February 4, 2026. Tokens such as Arbitrum ($0.13211), ZKsync ($0.02327), and Optimism ($0.2192) reflect the broader weakness, even as Ethereum itself attracts more direct usage.
According to Buterin, the trend is clear: when fees are low, users prefer the simplicity and security of the main chain. This undermines the assumption that Layer 2s would dominate everyday transactions and places pressure on L2 teams to articulate a stronger value proposition.
A New Direction for Layer 2s
Buterin’s roadmap calls on Layer 2 networks to focus on capabilities that go beyond scaling. Potential paths include privacy-focused virtual machines, highly specialized environments for single applications, extreme scaling scenarios that even an expanded Layer 1 cannot support, or alternative designs for non-financial use cases such as social platforms, identity systems, and AI.
He emphasized that any Layer 2 managing ETH or Ethereum-based assets should reach at least stage 1 security. Without this, such networks risk becoming standalone blockchains connected to Ethereum only through bridges, rather than true extensions of the ecosystem.
Interoperability also remains critical. Buterin highlighted the importance of a native rollup precompile that would allow Ethereum to verify zero-knowledge proofs directly, stay aligned with protocol upgrades, and provide protection during hard forks. This infrastructure could give Layer 2s greater design freedom while anchoring them to Ethereum’s security model.
As Ethereum’s base layer continues to scale through 2026, Layer 2 networks face a defining moment. With users increasingly choosing mainnet security when costs are low, L2s must evolve or risk marginalization. Whether through advanced privacy, new virtual machines, or entirely new application models, their next moves will play a major role in shaping Ethereum’s long-term architecture.