Anecdotally at least, my impression is that the German eXit is very much underway -- Mastodon has long had strong adoption there (there's even a federal government instance, https://social.bund.de/ with many institutional accounts) and this seems to be accelerating. BlueSky seems to also be growing fast.
Musk's tweet promoting the far-right and dehumanizing refugees did _not_ go over well in a country where much of civil society is working hard to prevent fascism from being resurrected.