Despite fierce debate, Ethereum's scalability roadmap still hinges on rollups. While rollups have undoubtedly paved the way for Ethereum’s scaling success, their lack of synchronicity with the main chain creates issues.

Rollups must maintain specialized proof mechanisms and rely on security councils or governance votes to stay current with Ethereum’s upgrades, causing lags and disconnect. Further, each rollup’s varied security assumptions and degrees of centralization fragment the ecosystem and slow interoperability. Meanwhile, each new hard fork forces rollup teams to manually update to stay compatible.