I think snobbery is common in every genre fanbase.
Of course the prog fans on MB (myself included) are f*cking awesome. But you know how the PA community is and how ridiculous the reviews can get, I think I've shown you reviews from Ivan Melgar Morey and ExitTheLemming before.
The punks here are pretty cool for the most part so I'm not writing off the whole punk community. That "field guide to genre snobs" post was hyperbole for comedic effect and me just taking the piss on everybody.