My opinionated take is there was a kind of cultural moment where the world was ready for Something Else post-twitter, and instead of just the Fediverse, or just something else, the world encountered a fractured, motley combination of Fediverse/Bluesky + AT proto/Threads and there was never a unified zeitgest moment that belonged to any single answer, though BlueSky was closest to having a kind of cultural watershed reaction moment.