What privacy? The Fediverse runs on an open protocol. Everything you say and do is transmitted to the world. If you’re posting here your data isn’t being bought and sold by big tech, it’s being given to them.
This isn’t to say that the Fediverse is a bad place or anything, just pointing out one of the tradeoffs in how it works. It’s not under any one organization’s control but there’s consequences from that.
If they’re thinking of making “style” something that can be copyrighted, then the effects on AI will be trivial compared to the general creative apocalypse as giant corporations lock everything down and go to war with each other.