But "AI art" generally has human involvement of some form, and the standard for that is very low. The specific case of submitting for copyright and claiming that no human input was involved means that the copyright office can take that claim for face value. That doesn't mean AI art generally doesn't qualify for copyright, you just need to "admit to" human involvement of some form. And it's unclear if AI art without human involvement even is a thing.
E.g. if as discussed in the subthread here we are talking about claims of copyright infringement, the first thing the claiment is going to assert is that humans had input into your "AI", and good luck disproving that (especially for the even more specific example here were the people making the claim were involved in building the core of your "AI", so even if you find an argument that your work wasn't human involvement you still need to disprove their claim that their work was!).