There are always people who are snobs. It applies to anything, a friend from high school liked Guns and Roses until they were "popular". Was the music any different? No, but its a way some people consider themselves elite.
My friend thinks I am a beer snob since I won't drink Bud and some other domestic brews. I would rather drink a soda before I had a Bud, because Bud really messes up my stomach and I pay for drinking Bud the next day.
I'm not particularly a beer snob, but I won't drink Bud either. Tastes bad, more filling!