Meh, as all subcultures one is expected to have certain basis, while a huge part of wow population are working people over 30 it is still associated with nerds (most vocal, the working over 30 couldnt care less about forums or kid tantrums) so yeah.
If you are a punk you are expected to know the sex pistols, ramones and so forth
If you are a goth you are expected to know bauhaus, banshees and so forth
if you are a club person you are expected to know that dude with horrid hairstyle.
and so forth
You play wow, thus are considered a nerd, thus are expected to know zelda and mario.
I play since those times and meh, couldnt care much about either of those (heresy i know), never been a console kid, talk me about star control, comand and conquer, total annihilation and so forth and its a different story