Reading a book is a time investment so I want it to convey the thoughts of another human being, otherwise it would feel like wasting my time. Listening to music, on the other hand, often is something that I do while I exercise, to keep a brisk pace and not get bored. As long as it sounds good, fits the genres and styles I like and is upbeat enough for exercising, I wouldn't have much of a problem with AI music - maybe it would even be a plus, since there are some specific music genres where I have already listened to pretty much everything there is (and no more is being made), and it would be great to have more.
I don't listen to podcasts, but I suppose in that case it depends on how you do so: devoting your full time and attention like a book, or as a background while you do something else like exercise music? As far as I know, many listeners are in the latter case, so I don't see why they wouldn't listen to AI podcasts.