I would agree that its annoying when someone states they are really into something and don't even have a basic background to it.
But as it relates to the general masses, I think the general concept found here at this site can be found with just about anything. For example, I'm really into micro-brews and really good craft beers and I don't understand why the vast masses of people drink Miller, Coors, Bud or any of that swill. But I realize I have a very minority position and don't hold it against them.
And I'm sure the same kind of hardcore people exist out there for automobiles, various food products, clothing, electronics, etc, etc, etc. In my mind its all about finding something that blows your hair back and sparks your interest. While you try to educate those you can, just realize few will ever get it.
And when many of you in here go buy that 6 pack of yellow pee they call beer at your local supermarket, just know that I'll be disapproving...