Did he though? Or was the Butlerian Jihad backstory whose function was allow him to believably center human characters in his stories, given sci-fi expectations of the time?
I like Herbert's work, but ultimately he (and Asimov) were producers of stories to entertain people, so entertainment always would take priority over truth (and then there's the entirely different problem of accurately predicting the future).
Why not? Who is this technology expert with flawless predictions? Talking about the future is inherently an exercise of the imagination, which is also what fiction writing is.
And nothing he's saying here contradicts our observations of AI up to this point. AI artwork has gotten good at copying the styles of humans, but it hasn't created any new styles that are at all compelling. So leave that to the humans. The same with writing; AI does a good job at mimicking existing writing styles, but has yet to demonstrate the ability to write anything that dazzles us with its originality. So his prediction is exactly right: AI does work that is really an insult to the complex human brain.
Asimov was mostly not a fantasy writer. He was a science writer and professor of biochemistry. He published over 500 books. I didn't feel like counting but half or more of them are about science. Maybe 20% are science fiction and fantasy.
https://en.wikipedia.org/wiki/Isaac_Asimov_bibliography_(cat...
But that's more a knock on people like Marc Andreessen than a reason you should put stock in Asimov.