It all goes back to rightwingers not being funny. They're just not. I've tried watching Guffeld, and I swear his ratings come exclusively from being propped up by Fox News. Comedy, even mean comedy, works from being able to emphasize with the subject of the story. Even when he's being evil, Dave Chappell makes me smile. Sometimes I smile because what he said left me gasping. Sometimes it's a frozen smile of shock, like I can't believe what he just said, good lord! Mostly the second kind these days, he's been in a mood.
Right-wing comedy though, is all comparison crap. It's always got this uncomfortable undercurrent of extreme anger under the surface, too. "Hey! Look at those freaks over there! Jesus, we sure knew how to handle them back in the day! Hahaha! They wanna use the same bathrooms as my daughter?! Yeah, why don't you f***ing try it, huh?"