> demonstrating that the act of creation isn't special. And that undermines categories of justifications for IP.
The purpose of patents is simply to encourage invention and discourage keeping inventions a secret. It's not premised on the "act of creation being special".
The way this is most likely to play out is that humans will use AI as tools to help them invent things, not that AI will invent things all by itself. So the premise and need for patents will remain intact.
If, however, AI somehow accomplishes the same goal as the patent system, then the patent system becomes unnecessary and will go away. As long as the goal is still being achieved, that's OK.