I created an account on Instagram and then on Threads. I occasionally post on Instagram. I don't post anything on Threads. It does kind of look a lot like Twitter, but almost without anyone I know. It has some celebrities and journalists, but I haven't seen any linguists or Wikimedians yet, which is okay, because I find more and more of them here on Mastodon.
Threads, like Twitter, does have a lot of strangers posting opinions about Israel, though.