So we're soon going to see Sora-generated Disney movies?
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I think it depends on what they use it for. For fantasy stuff like cartoons, aliens and (not fantasy) dinosaurs it may be ok, and I guess they could train on old hand-animated cartoons to retain that charm (and cartoon tropes like running in place but not moving) if they wanted to. If they use it to generate photo-realistic humans then it's going to be uncanny valley and just feel fake.
It would be interesting to see best effort at an AI dinosaur walking - a sauropod using the trained motion of an elephant perhaps, which may well be more animal-like than CGI attempts to do the same.