Of course Southern people treat the neuveau riche like they're inferior. They're yuppies. They're money without history or culture.
I pointed out myself in this thread that the South is divided by classes, and in the South class still has more to do with education and culture than money, similar to the way it is in Europe.
Only Americans would be idiotic enough to think that money gave a person class, in and of itself. And that's where we get travesty freak shows like Las Vegas, Nevada, plenty of money, zero culture, high suicide, high homelessness, low educational achievement, low-brow.
Money =/= culture.