Why would AI make these age worse than, say, libraries or languages becoming obsolete?

I don't think a good learning resource gets worse just because there's a newer alternative.

> I don’t think a good learning resource gets worse[...]

Probably not, but they become irrelevant. The other day I found an old programming book at my parents’ and while it was still a terrific resource, I couldn’t image anyone learning a language from a book nowadays.

AI is doing the same thing but 100 times effectively than anything else.