And this from this episode with Casey Newton and Joshua Toplosky:

Josh: ā€œI understand the whole Fediverse and the Mastodon thing, and that is cool, and if they can make it work well, Iā€™m totally into it and will keep posting thereā€¦

ā€¦But I think we all acknowledge, that whether itā€™s Jack Dorsey, or Elon Muskā€¦ one of these are going to run the social networkā€¦.Do if in this case [of Threads] if itā€™s owned by Mark Zuckerberg versus Elon Musk?ā€

Casey: ā€œBut we havenā€™t even discussed that itā€™s decentralized. Which is the actual answer to this question. You are going to be able to set up your own [Activitypub] server, & your posts are going to be able to appear on Threads even though Meta doesnā€™t operate itā€¦ā€

Josh: ā€œā€¦.There is a common belief that they are doing that partially because if they basically make it part of the fediverse, they can get basically away with doing whatever moderation they want [on their site] and say [to those outside their site] ā€˜Hey, you can own your own server, and you can post whatever you want, and set up your own [server] rulesā€¦and they donā€™t have to be the arbiters of free speech on their own owned-and-operatedā€¦ā€

Casey: ā€œItā€™s a good answer to that problemā€¦ā€

Josh: ā€œItā€™s the answer we are all looking for I think.ā€

podcasts.apple.com/us/podcasā€¦