South Park is definitely much deeper than that. And maybe the swearing isn't everybody's taste, but it's part of the humor. They use it in a very specific way so it's not just gratuitious.
This is what worries me, looking down on and sometimes even censoring shows simply because they have an edge, even if they are intelligent and have good messages. Just because a show doesn't have cursing, doesn't mean it's any more intelligent or moral.
I guess what I'm saying is, don't judge a book by its cover, nice or edgy.