Gregory's ServerIt might just be another social media platform, but the fact that Threads is saying it plans to integrate ActivityPub is encouraging. That sets it apart from others which are just another walled garden.
Assuming they implement it in such a way that allows it to communicate with the fediverse, of course. I'm cautiously optimistic though. If they put a big dent in Twitter, it might even force them to also integrate with the rest of the social internet.