However, the loss of reading self-help books surely will hurt no-one. It is an ill wind, etc ...
Let's say I'm living in the past and think Star Trek TNG and the X-Files was peak TV. If I could just hit enter and generate an in-all-ways-believably-authentic episode, maybe I just wouldn't watch anything else. Would it matter to my brain that real people didn't make the episode if it was indistinguishable from the real thing?
Somehow, this is one of the episodes I never actually watched, but it is interesting to me how often the Trek scripts cover essentially identical ideas to current discussions about AI: Moriarty insisting to Barclay that he was conscious even when his program wasn't running, Pulaski saying Data was just remixing and not actually intelligent, various examples of deep fakes, cyber addiction, AI going weird sometimes while following orders and sometimes just as an emergent bug.
"…You're absolutely right!"
Fiction, on the other hand… Much of fiction's value isn't just the content itself, is that they create a shared language medium. A book might actually be meh (came up with some examples, but then decided to drop it so as not to offend anyone), but the fact that people you talk with have read the same book and understand same references makes reading it valuable. So, it's unlikely to happen, until we delegate all of our communication to AIs, which isn't likely to happen any time soon.