The reality is that I think kinks are as evenly distributed through the population as anything else, but when you enter the BDSM scene, you can be reasonably confident that all the markers of nerdery will be present in a good percent of the people at you average play party or munch.
I can go to a munch and be more than confident that I won’t be the only one who enjoys RPGs. While genre classics are transitory and I can easily find people who enjoyed Starship Troopers or girls who grew up with Anne Mccaffrey and Mercedes Lackey, the overlap between the poly, the pagan, the terminally nerdy gamers, the historical re-creationists and so forth has been long remarked upon to the point that it’s practically a cliche. If you tel me “she volunteers at the Rennefaire” I’m not going to think it’s at all unusual if you tell me “she is also extremely interested in table top, is a practising Norse priestess and is one third of a poly triad in which she is the alpha submissive”. And don’t tell me you didn’t notice either!
I’ve seen it remarked on negatively, as nerdery is not for everyone- nerd culture also has its problems, which can make a barrier to entry for people who are incidentally kinky but not really nerdy. But I don’t accept the premise that kinky people are inherently *Smarter*. I actually know plenty of dumb nerds. Ability to enjoy specific intellectual property is no marker of a high IQ.