
Fragmentation isn't the risk here, it's already the baseline. Starknet and zkSync shipped native account abstraction into their protocol design years before ERC-4337 existed on mainnet. Ethereum L1 and its L2s were never going to converge on one AA spec, they started from different assumptions. What actually matters is whether wallets and app devs can abstract the difference away, not whether L1 and L2 teams agree on a shared roadmap
