I’m still pretty much “wait and see” on this. A lot of folks are predicting gloom and doom, but also have a lot of good points. Meta shouldn’t be trusted in general, but they also haven’t done anything yet - they haven’t even implemented ActivityPub yet.
I think it’s more they’re trying to make a Twitter-killer then kill Mastodon from the inside. They want people on their site so they can show them ads, and they want to get those people from Twitter. ActivityPub integration is another feature they can use to get attention.
Awhiskeydrunker