I don’t get why this is an issue. Assuming they purchased a legal copy that it was trained on then what’s the problem? Like really. What does it matter that it knows a certain book from cover to cover or is able to imitate art styles etc. That’s exactly what people do too. We’re just not quite as good at it.
From the cats perspective I think it’s quite uncontroversial to say they’d be happier roaming free.
EDIT: I’d really love to hear the argument for why a cat actually prefers to live its enitire life indoors, despite this being something we’ve only done to them for the past few decades or so.