Well they can outright remove personalised recommendations no problem, a flat curated list can be generated pretty easily, they could even employ an editor (lol, lmao even). I’m assuming non personalised recommendations should be fine given the alternative would be overly broad by quite some margin

UGC is going to be an interesting one depending on the rules they expect to enforce on them. Human moderated content is probably the most likely thing that would probably be a deal breaker for them continuing it