Yes it is. Here's why: People in general are not stupid.
Colbert takes them to be. That's not going to go well for him.
Also your citation sucks. People in this country are retarded to boot. No citation required - just take a look outside at whom is reproducing and whom isn't.
Colbert's band is absolutely disgusting.
His citation does suck (although could be sarcastic response), but people aren't stupid (look up the Flynn effect, we are in fact getting smarter and smarter, with average IQ going up ~3 points every decade).
Have you met people?Yes it is. Here's why: People in general are not stupid.
Colbert takes them to be. That's not going to go well for him.
Samantha Bee is basically the opposite of politically correct.
Unless by "politically correct" you mean "liberal" in which case she most definitely is.
conforming to a belief that language and practices which could offend political sensibilities (as in matters of sex or race) should be eliminated
If you ever watched the old Carson shows, they are chock full of middle America. Like they would have on old ladies, winners of state fairs, animal handlers, just the most average people in the country.
Pretty much all of the late shows have veered far far away from that.