I think South Park is not only the most intelligent humor on television, but also the most balanced.
The creators obviously don't adhere to fragile things like 'party lines' and knock that in society which is purely stupid.
People tht don't like South Park seem to be in two camps.
Those that are offended, and those who don't think it's funny.
I believe Cap'n is one that just doesn't think it's funny. This I can understand because if it's not your humor and you're not looking for ponderings on life and creation between Cartman shitting on his mom, that's cool.
But people that are actually offended by it, I dunno, just thinking that is probably what makes it as good as it is in my mind.