I agree that we should take the matter lightly. Poking fun isn't elitism. Sure we're putting somebody down, but if a guy has no interest in learning about the thing he's bragging about, then we're not judging him for his ignorance, we're judging him for his willful ignorance.
Maybe it's immature, but elitism isn't this. If we took the interest in keyboards so seriously that we would couldn't find a chuckle when somebody is being a douchenozzle, then it would lead us to true elitism. A place where few want to tread.
I think elitism is a problem in the geek world, as a whole, but I haven't seen a problem with it here on GeekHack, or in the elite keyboard community at large. People seem more interested in enlightening, and bringing more people into this amazing world, than guarding the knowledge and shutting people out.
I think you need to let people loosen up a bit, because you're being elitist about your ability to not be elitist.