All this copyright/AI stuff is so silly and a transparent money grab.
They're not worried that people are going to ask the LLM to spit out their book; they're worried that they will no longer be needed because a LLM can write a book for free. (I'm not sure this is feasible right now, but maybe one day?) They're trying to strangle the technology in the courts to protect their income. That is never going to work.
Notably, there is no "right to control who gets trained on the work" aspect of copyright law. Obviously.