If you publish a podcast where your guest encourages heinous behaviour without you challenging - that's a you problem.

Saying "Well, our listeners can decide for themselves" is a cowardly cop-out.

You might not be able to change the interviewee's mind but you can sure as hell send social signals to your audience that you condemn their views or think they're ludicrous.

Case in point - why are you trying to change my mind here? You're pushing back because you want to signal to others that my point of view is incorrect. That sort of basic interrogation seems completely missing in (especially American) media.