1) the creating of the model is does not violate copyright. Claiming otherwise means running same algorithm in meatspace would violate copyright laws, which implies thoughts violates laws which is absurd.
2) distribution of the model does not violate copyright laws because the models themselves do not contain latent copies of the work. The model itself is not the work nor a recognizable copy of it nor can it be reconstituted back to the work. It is a tool more analogous to photoshop where the tool can be used to reproduce copyrighted work, yes, by the end user (where I believe the responsibility lies). But the tool itself is not copyrighted work. Microsoft word can be used to generate copyrighted books if I’m correct. Or I can hire smarter tool: a human writer to produce copyrighted works. Is the writer-for-hire illegal? Or his employability is illegal? Of course not. I believe the law will eventually take the position that AI model is a tool.