I believe it's a scam because for most people Ethereum is only accesable through centralized api's. And we saw recently that these apis will gladly stop providing services to specific things if the governments says so leaving users with just their dick in their hands. It's possible this overreach will be defeated in court and it's possible reliance on centralized apis will shrink in the future but for now it's not decentralized as far as I can tell

faithandcredit

nostr

Nostr vs. Farcaster

FYI: https://github.com/farcasterxyz/protocol

"Farcaster achieves sufficient decentralization through a hybrid architecture with on-chain and off-chain components.

Identities are stored on-chain in an Ethereum smart contract to leverage Ethereum's robust security, composability, and consistency guarantees. An Ethereum address controls this on-chain identity and can be used to sign off-chain messages on its behalf.

Data is cryptographically signed by an identity and stored off-chain on user-controlled servers called Farcaster Hubs. Data is not stored on-chain because it would be prohibitively expensive and slow to settle on most L1 and L2 networks."