While I’m not a huge fan of the canard that “the only acceptable form of bigotry these days is against so-and-so,” largely because there are enough values of so-and-so that it’s invalid—fat people, Southerners, whites, straight people, smokers, short people, ugly people, ad nauseum. Nonetheless Matt Stinson has a point:
A sizable number of those who relentlessly mock Southern speech and culture do so because they enjoy the thrill of “superiority” which comes from being bigoted without the stain of seeming prejudiced against a racial or ethnic minority.