I wouldn't put too much stock in this. Asimov was a fantasy writer telling fictional stories about the future. He was good at it, which is why you listen and why it's enjoyable, but it's still all a fantasy.
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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.