While those are your parameters for why ads are objectionable, they aren't universal, and concerns about privacy implications AND user experience both apply to

While those are your parameters for why ads are objectionable, they aren't universal, and concerns about privacy implications AND user experience both apply to ads in podcasts. Personally I don't mind listening to ads in podcasts, but I don't see the doomsday scenario here; plenty of podcasters already paywall episodes on Patreon. As with online publishing, the alternative to ads is the subscriber model.