I'm not sure I'm entirely comfortable with this line of thinking. Sexuality isn't a physical need in the sense that, say, water is a physical need, but it is a pretty fundamental drive. It certainly doesn't morally oblige any particular person to fulfill it for you (analogously, the human need for companionship doesn't oblige random strangers to accept overtures of friendship), but it's sufficiently potent that I'd be cautious about casually demoting it below other social considerations, let alone suggesting sexual asceticism as a viable solution in the average case; that seems like an easy way to come up with eudaemonically suboptimal prescriptions.
Nice Guy (tm) psychology is something else again. I'm not sure how much of the popular view of it is anywhere near accurate, but in isolation I'd hesitate to take it as suggesting anything more than one particular pathology of sexual politics and maybe some interesting facts about the surrounding culture.
It's too specific/complicated to be low level/fundamental. Actually all of them are too specific/complicated to be low level. They're just so widely and thoroughly internalised (to the point where not being that way will likely be bad for you just because other people will dislike you for it) very few people realise they are changable, or are motivated to change them. There's little reason to change them for most people. Not having a desire for revenge or redress grievances is a quick way to become a target/victim, status seeking gets you status if you do ...
One of the lessons highlighted in the thread "Less Wrong NYC: Case Study of a Successful Rationalist Chapter" is Gender ratio matters.
There have recently been a number of articles addressing one social skills issue that might be affecting this, from the perspective of a geeky/sciencefiction community with similar attributes to LessWrong, and I want to link to these, not just so the people potentially causing problems get to read them, but also so everyone else knows the resource is there and has a name for the problem, which may facilitate wider discussion and make it easier for others to know when to point towards the resources those who would benefit by them.
However before I do, in the light of RedRobot's comment in the "Of Gender and Rationality" thread, I'd like to echo a sentiment from one of the articles, that people exhibiting this behaviour may be of any gender and may victimise upon any gender. And so, while it may be correlated with a particular gender, it is the behaviour that should be focused upon, and turning this thread into bashing of one gender (or defensiveness against perceived bashing) would be unhelpful.
Ok, disclaimers out of the way, here are the links:
Some of those raise deeper issues about rape culture and audience as enabler, but the TLDR summary is:
EDITED TO ADD:
Despite the way some of the links are framed as being addressed to creepers, this post is aimed at least as much at the community as a whole, intended to trigger a discussion on how the community should best go about handling such a problem once identified, with the TLDR being "set of restraints to place on someone who is burning the commons", rather that a complete description that guarantees that anyone who doesn't meet it isn't creepy. (Thank you to jsteinhardt for clearly verbalising the misinterpretation - for discussion see his reply to this post)