According to ChainCatcher, the full-chain interoperability protocol Orbiter Finance tweeted about the difficulties faced by L2 raised by Vitalik, saying that it has been committed to becoming an open decentralized cross-chain protocol. Orbiter Finance has provided cross-chain services to 3.7 million users and has solved what Vitalik called the "light client problem", achieving the validity of L2 status through light clients deployed on L1.