Well, in my opinion, "getting your philosophy" from someone/something means that you're a twat without the capability to create your own mental compass. Followers in general are annoying. Stupid followers believing they are smart, are even more annoying.
Anyhow, people seem to miss the point with South Park. It isn't a moral philosophy lesson, it's satire. Do you know what satire is? It's about pointing out the stupidity of society by exaggerating it (if necessary).
And Scientology is very different from mormon faith because, guess what, they don't normally recruit by claiming to give a personality test that will give you the feedback that you're depressed and mentally ill, and that they can help you.
That is a huge difference. And, it's also the fact that the scientologists try to keep what their faith really is hidden (the whole Xenu stuff). South Park basically schooled pretty much most of their viewers in scientology by presenting it as comedy.
South park's political/philosophical side is SATIRE.
Don't you guys know what satire is? seriously? It seriously looks like people sue so damn much in the states that people are afraid of being satirical, that's sad.