I agree with you that the socially awkward among us could reap large benefits by implementing these "anti-creeper measures". That's because we live in a society where such "creepy" behaviors are deemed unacceptable, and in order to fit into a society, one has to follow that society's norms.

However, I think many people on this thread have a problem with these norms existing, and that's what they're upset about; they'd like to combat these social norms instead of acquiescing to them. And I can certainly see why a rationalist might be opposed to these norms. The idea of "creepiness" seems to be a relatively new social phenomenon, and since it emerged, people have gotten much more conscious about avoiding being "creepy". Most of the discussion in the comments has been about unwanted physical contact, but another part of creepiness is unwanted verbal communication. Social norms seem to cater increasingly to the oversensitive and easily offended; instead of asking oversensitive people to lighten up a bit, we often go out of our way to avoid saying things that will offend people. And of course, any social norm that prevents people from communicating their beliefs and opinions honestly is contrary to the goals of the rationalist movement. It may then be of interest to rationalists to fight this increase in sensitivity by encouraging open discussion, and discouraging taking offense.

Of course, to actually change social norms, we would first have to infiltrate society, which requires gaining basic competence in social skills, even ones we disagree with.