Yes. This isn't because the alternatives aren't cool or useful, or even that Twitter is suddenly bad. It's because virtue-signaling trends fade quickly, which

Yes. This isn't because the alternatives aren't cool or useful, or even that Twitter is suddenly bad. It's because virtue-signaling trends fade quickly, which is all this mass migration was. Twitter has always been ridden with 'non-technical problems' like moderation, tribalism, and people complaining that it used to be better. Also moats outlive trends.