BlockBeats News, September 23rd, in response to the recent Centralization Controversy surrounding Base Layer Sequencers (some even argue that Base should be defined as a trading platform rather than an L2 network), Vitalik stated that Base is doing things the right way: an Ethereum-based L2 leveraging centralization advantages to provide stronger UX features while still being tethered to Ethereum's decentralized base layer for security.
Vitalik also emphasized that Base does not custody user funds, they cannot steal funds or prevent users from withdrawing funds (which is part of L2beat's Phase 1 definition).