I've heard amazing catchy songs from Suno and Udio. So much so they're still stuck in my head as earworms several months later. If they'd been streaming on youtube or spotify I wouldn't have given it a thought that they might be AI generated.

So, I can certainly imagine a podcast doing the same to some degree. Maybe not a podcast where AI wrote the script, but, a podcast where AI read a story dramatically doesn't seem too far off or, easier, a podcast that read news to me.