Farcaster is a sufficiently decentralized social network. It is an open protocol that can support many clients, just like email. Farcaster was co-founded by Dan Romero and Varun Srinivasan. Both co-founders have extend experience in the crypto space at Coinbase.
Solana scales to 65k transactions per second, while other popular blockchains do not scale as much. For example, the average Bitcoin network processes around 7 transactions per second, and the Ethereum network processes around 15 transactions per second.