Testing the fair use argument for training won't necessarily answer the question about copyright laundering. You could easily make the case that training is fa

Testing the fair use argument for training won't necessarily answer the question about copyright laundering. You could easily make the case that training is fair use, but that doesn't have to imply the model's output is non-infringing. For example, it seems reasonable to train a model by feeding copyrighted texts and images, and that model could be useful for analyzing the content, finding facts, or detecting features. But we're in murky waters when the model also starts outputting the original content (be it verbatim or "derived"). Not all that different from human learning: you can study and learn from publicly available books but that doesn't grant you the right to recite their contents and claim it as your own, original work.