My takeaway from that is that every ai model should have a disclosure as to what it was trained on. If it can create art with significant resemblance to work that was not included in the disclosure, that would be proof of a failure to disclose, which should come with repercussions.
Imo plagiarism machines should face the same repercussions as humans that do plagiarism. Obfuscation by a black box shouldn't protect the plagiarist from liability.
Ignoring the fact that that would be so unlikely as to be nearly impossible, art that is almost identical to other art is a clear case of plagiarism. The method that was used to create the copy should not matter. A painter copying a photographer's art without proper attribution or renumeration, is still plagiazing. They might have used different tools, but it's still a copy.