Without copyright, what LLMs raiding the creative output of whoever (including by destroying and scanning books), and reproducing it, even exactly, wouldn't have any legal restrictions, but neither would overt piracy.

It would be a very different world. So, depending on what you think is "wrong" with one of the listed activities but not the other, it might be solved by eliminating IP (as part of overthrowing Capitalism or otherwise). Also, the current private justifications of those behaviors would no longer acquiring or obtaining capital, but that doesn't mean people wouldn't pursue those behaviors for other justifications.

I think in a socialist world, a great many artists will still find themselves working to make a living; they will work for the community instead of the Capitalists, but there will still be work to be done, and art may not keep your belly full in lean times. But, I also have problems imagining a socialist world.