I mean there's the problem right there — you're talking about Bernie Sanders and Ben Shapiro as if they're two people equally deserving of equal space on an enormous platform of listeners.
Why are they not? Ben Shapiro is literally a standard conservative talking head who only now is seen as controversial because American politics is insane. And I'm pretty sure it's Rogan's choice who he wants to talk to. Policing that ruins the entire appeal of the podcast and just turns it into exactly what people were trying to get away from, i.e. heavily produced and filtered content on mainstream television such as late night talk shows or whatever
Well yes.. I don't see why not. He brings a lot of different crowd, I'm not an American so I don't care about your childish bipartisan politics, but him talking to candidates gave me a better overview than watching 48h of your news channels.