i don't think so. maybe the whole thing just escaped your radar? it happens sometimes. there were some news stories about people escaping from Twitter to Mastodon when Elon Musk took it over. it's the biggest alternative to Twitter right now.
Discussion
So twitter owns mastodon?
that's not what i said, no. if Twitter owned it, it wouldn't be an alternative. that's like saying Instagram is an alternative to Facebook, but Meta owns them both, so it's the same company. like Nostr, Mastodon isn't owned by anyone or operated by any one person or company. it's free and open and not centrally controlled.