I still think there's room for something better technically. Mastodon seems more true to the decentralized ethos but I've never quite gotten used to the server dependency experience.
Nostr appeals to me technically but every time I'm on it seems swamped completely by discussion of cryptocurrency.
I guess to me it feels like one of these catch 22 (necessary but not sufficient?) problems where you have to have the right technical base for a platform, which seems doable, but even then you have to have the right userbase also.