Much as im desperate to say no to this question, i find myself unconvinced by that answer.
I think it is all dependant on situation; whilst with a few of my mates il happily sit around and chat the finer points of games, from WoW vs WAR vs EVE to why Sonic pwns Mario. with other friends it just won't get mentioned at all and bringing it up is definatly of the cards.
infact it comes up with those mates only in so far as; Rockband? ok.
Family is much the same, grandparents wont ever understand it, parents probably never, although my mum robs the Wii to 'play' wii fit and other games of the such.
Being a football fan (Soccer to the unenlightened) i also have my friends in those circles, and it never comes up, except to discuss the occasional FM game you'v been playing. Or the now classic in those circles: "i signed him on football manager and he was awesome" when your club buys someone.
Back to the point at hand, surely, it is all about situation and how embarrised being a gamer makes you.
And for those high and mighty people belittling others for making you feel embarrised about gaming, iv been made to feel the same about being a football fan by my gamer friends. What goes around comes around, deal with it and welcome to life.