I did overgeneralize. I may have been overly blunt in the way I stated my case too. I'm sure there are cases, in face to face Bitcoin meetups of women and others who don't fit the typical "tech geek" mold being not treated properly. The post you linked to seems to be an example of that and she may have some legitimate complaints, but by her own admission she experienced some minor discomfort not life-shattering trauma. She has not let it keep her away from future Bitcoin meetups and urges other women not to let it keep them away either.
My point was that it is possible to succeed in the Bitcoin world without ever going to a meetup, in fact hardly ever leaving your home (not that I'd recommend that). So the culture of the meet ups is really only slightly relevant, especially since any splinter group that wants to could organize their own.