You've identified a serious problem. Unfortunately, your solution appears to be abandoning our search for truth because some members can't handle the truth.
That is approximately correct. It isn't an approach that I often take and one which, when taken, is best to make explicit.
We like to say "politics is the mind killer" and I say from time to time "social politics is the mind killer". The implicit understanding of social politics is exactly that thing which is most notably weakened in autism and so what we are describing here. We are reluctant to talk about politics. We do discuss it here and there but cautiously and only around the fringes. I suggest that we already have exactly the same approach when it comes to discussing social politics and for much the same reason.
Politics is the mind-killer in normal people at least as much as in autistics.
If we were politics-autistic (as opposed to your description of social-politics-autistic), that would make it easier for us to discuss politics, not harder. And if it's true that we tend to be (socially) autistic, that should make it easier and safer for us to discuss (social) politics. We would process claims about social politics using general reasoning rather than dedicated social-politics modules (which don't work well in autistics), and so wouldn't be as emotionally invested...
Suppose that you're a bee. Perhaps, even, an extremely rational bee. And yet, as you go through your life, you can't shake the feeling that you're missing something - the other bees live so effortlessly, alighting on flowers bursting with pollen as if by chance. Try as you might, you can't seem to figure out the patterns that they're unconsciously drawn to. Are you overanalyzing? Are you overwhelmed by sensory data? But the others seem to defy thermodynamics in their ability to extract useful information, all the while wasting so much effort on suboptimal patterns of thought.
Perhaps they have access to different data? Perhaps, where you see a uniform field of yellow, they see bullseyes.
Less Wrong seems to have a problem with socializing. Not just an unusual share of the people, but the community's character (as if it were a person). We should suspect ourselves (as a collective) of overlooking the ultraviolet, those facts about the world that are so easily accessed by some others. We should be suspicious of simplistic or monolithic explanations of social reality that don't allow sweeping social success on the same scale as their claims. We should be suspicious of dismissals of social concerns.
Am I off the mark? Am I worried over nothing? Am I overreaching? I am tossing this idea out into the sandstorm of doubt so that it can be worn down and honed to the razor edge at its core, if such a thing exists. I ask you to be my wind and sand.
Disclaimers: I don't intend this as an insult. It's a reminder - as a collective intelligence, we have a blind spot. We shouldn't conclude that there's nothing behind it. I myself am pretty dang "manualistic" (or whatever the other side of neurotypical is called). I am not an apiarist.
Edit: I've removed the focus on Autism. I was wrong, and I apologize. The post may be further edited in the near future.