How creating an account in yet another centralized social media app is going to solve things? Policy might be anti AI now, but what happens if Cara get's sold and the new company decides to change it? Don't get me wrong is good that options are popping out to give some fair market share to Meta, but how is Cara sustainable in the long run?
A big difference is that, instead of leaving all content behind because it was only hosted there, you still have a lot of content as only a piece of the federated content disappears (or defederates, or paywalls, w/e)
It's not just about the content posted by individuals though. The community and relationships built on a centralized platform are also at risk to a much greater degree than they would be on federated social media.