You'll see the same thing in defamation cases. Someone will no doubt use AI to create someone's likeness to say something that person finds reprehensible and whoever created that AI may try to argue it's just an AI. It won't matter then either.
Where this gets more interesting is if whoever created the AI gets held responsible for what people do with it. The kneejerk reaction in the tech community will be to say "no, it's just a tool" but there's such a thing in legal terms as a reckless disregard for the consequences making you culpable.