Given their track record, they seem to have an attitude toward behavioral disorders that, while the feelings are real, it's a matter of discipline and willpower to overcome them rather than a matter for therapy and pharmaceuticals. They think that when you make negative feelings or behavioral patterns into a disease, people use it to excuse their behavior and avoid their personal responsibility for their own actions.
But I also think that if you've followed South Park this far as they made fun of tender topics for other people, you agree to be thick skinned when they make fun fo your own tender topics.
South Park has always said things that some people will get offended by but it's never been degrading or mean spirited, and it's always been understanding in a larger context. It's a case where I think it has value stimulating a conversation even when I don't agree with it.