It feels incredibly gross to just say “generated CSAM is a-ok, grab your hog and go nuts”, but I can’t really say that it should be illegal if no child was harmed in the training of the model. The idea that it could be a gateway to real abuse comes to mind, but that’s a slippery slope that leads to “video games cause school shootings” type of logic.
I don’t know, it’s a very tough thing to untangle. I guess I’d just want to know if someone was doing that so I could stay far, far away from them.