If you had received one of these podcasts, say 3-5 years ago, I guarantee you wouldn't be able to tell it's AI generated. And I'm willing to bet it's valid for 90%+ of the people here, even those heavily involved in the field. The quality of the voices, the mimicking of umms, and ahhs, the subtle speaking over each other, they really are extremely impressive.

If you want you can do a test with people that haven't heard about the tech. Have it generate something you know they'll enjoy, maybe 2-3 min long, and have them listen to it without knowing it's AI generated. Ask them about the subject, and see if anyone mentions anything about being fake. You'll be surprised.