My main point is that if people don't want their content used for training LLMs they should absolutely have the option to not have their content used to train LLMs.

Training databases should be ethically sourced from opt in programs, that some companies are already doing, such as Adobe.

Hold on, piracy isn't necessarily not caring about copyright, but can be (and is, in a lot of cases), about fighting against the big corporations who take advantage of historically abusive copyright laws to dominate the market and prevent small authors and companies from surviving.

These AI companies, despite being copyright violators, are much closer to the big IP monopolists than the small authors, which are victims of both groups.

if a human is allowed to write a summary of a book, why should an AI not be allowed to do the same thing?

Said human presumably would have to purchase or borrow a book in order to read it, which earns the author some percentage of the profits. If giant corps want to use the books to train their LLMs, it's only fair that they'd have to negotiate with the publishers much like libraries do.