Did Vitalik just pick a side? Inside Ethereum’s layer-2 loyalty test

The Ethereum ecosystem is facing internal friction following a large ETH transfer by the Ethereum Foundation, developer resignations, and Polygon's AggLayer delays, all intensifying debates over Layer-2 (L2) alignment and governance. Vitalik Buterin's public endorsement of Coinbase's Base, praising its approach, has been interpreted as picking a side against Polygon's vision, especially after Polygon founder Sandeep Nailwal warned about existential threats to L2 direction. The core conflict centers on whether Ethereum will standardize L2 settlement to capture value or face liquidity fragmentation across competing systems like Polygon's chain-agnostic AggLayer versus the rollup-centric orthodoxy favored by Base and Arbitrum (which dominate L2 value secured and sequencer profits).

Ethereum leadership favors L2s demonstrating "good L2 citizenship"—using canonical proofs and relying on Ethereum for data availability. This aligns more closely with OP Stack-based solutions like Base and Arbitrum. Three potential futures are projected: a soft-alignment scenario where Ethereum captures 25%-40% of L2 fees; a fragmentation scenario (20%-25% probability) where non-Ethereum data availability layers draw activity away; and a re-convergence scenario where standards tighten, consolidating profit share among Ethereum-aligned L2s. The outcome hinges on whether L2 architectures prioritize canonical settlement, maximizing mainnet fee capture, or focus on chain-agnostic composability, which could decouple liquidity from the mainnet.

(Source：CryptoSlate)