Well, there's a lot more to being a poor white dude from West Virginia than "socioeconomic disadvantages". They are, in fact, a racial subgroup that get's discriminated against.
Well, "race" is an antiquated concept, without any coherent biological basis. Black African-Americans just happen to carry particular genes that affect skin color. Many Americans descended from African slaves are nominally white. Including many of those poor white dudes from West Virginia. AncestryDNA and 23andMe have blown many minds ;)
Edit: And about Mormon reaction to the musical. That's just evidence for their coolness :) I mean, can you imagine the reaction to the Islamic equivalent?
LOL can you imagine if the South Park writers made a Broadway play mocking Muhammad?
I can only imagine all of the openminded liberal attendees laughing at all of the mockery like they laugh at the mockery of the Mormon religion.
The current chattering class views on race are fucking sick.