I am not a big fan of sitcoms, thus not a big fan of BBT. On the other hand, the nerd angst (doesn't seem to quite reach the rage level) is odd to me.
I find it interesting when any given individual talks about 'nerd culture' or 'the community' because the community of people involved in board, tabletop RPG, miniatures, and wargaming is so vast and varied and has so many different tangential associations (comics, movies, TV, conventions, LARPing/Cosplay, and the list goes on) that no one of us can really hope to have a view of what 'nerd culture' is or is not or what 'the community' is or is not.
I've been to a lot of different conventions of different sorts in different states and I've gamed with people from all over the world of all perspectives (or a bunch anyway). I won't claim to know what defines a 'nerd' or 'geek' or even a 'gamer' with any definitive surety.
It's okay to speak to your own likes and dislikes and what your group is like. It's fine to try to identify larger trends in an assumed 'nerd culture' as if there was only one, I suppose, as long as you keep in mind you surely can't represent, describe, advocate for, or even know the extent of 'nerd culture' (more likely a bunch of cultures that interlink in some Byzantine way).
BBT is not the documentary some of you seem to be looking for. And many of the other web series or podcasts that kind of carry the flag better in terms of giving a more accurate portrayal of part of the nerd demographic and what those folk value... they are okay, but be sure they don't represent everyone either (any more than BTT does).
I love Wil, but I can't stand watching other people gaming. It's like watching golf or croquet to me - I can play those but watching them makes my brain bleed. And when the nerd fandom focuses on itself, producing various podcasts, videos, magazines, etc. that sort of turn the lens back on itself rather than just focusing on the games and gaming experiences, they lose me because *they rarely or never represent what my small chunk of nerd/geek-dom values*.
I'm not denying anyone's right to have an opinion of BTT (as I say, not my bag because it is a sitcom). But at least try to be aware most of our thoughts about nerd/geek culture(s) and the values of the people that participate are always going to be incomplete and wrong when they try to characterize and encompass such a vast, diverse, and unknowable mix of people and values.
The best we can ever do is to understand our own little part of nerd/geek-dom and not be too judgmental about how others present it, experience it, live it, or love it (or don't).
It's ironic that many of us feel judged by those who see themselves as non-nerds or non-geeks and yet we in turn judge those inside and outside our own communities quite regularly. Nerd/geek culture is sure not above hypocrisy at times, just proving that under it all we are human.