The South Park formula:
1. Take a controversial political and/or social issue...
2. Exaggerate to absurdity both the liberal and conservative points of view on said issue...
It's cynical false equivocation masquerading as insightful commentary.
The overarching political philosophy of the show is that the world would be a better place if everyone would just mind their own damned business. As such, anyone who cares about their community and actually tries to do something about it is mocked and ridiculed as an idiotic busybody, at best.
That's not to say the show isn't entertaining- it is. The writing can be really quite clever at times, but the pox-on-both-their-houses politics are simpleminded and, ironically, smug.