Costs outweigh the benefits.

if we manage to find important truths at the price of collectively looking like sex-starved nerds, I for one am willing to pay that price.

The question is whether that's necessary (or helpful) for finding important truths. You implicitly assume it is a required cost. More generally, is "writing in a way expected to alienate large numbers of people" a price that we must pay in order for our community to succeed?

Any pervasive trend that results in our community being the sort of place that a Dawkins or Dennett or Pinker would avoid is a trend that we should carefully analyze, and the burden of proof is correspondingly high to show that the net benefits of that sort of behavior warrant allowing it. I don't think anybody has shown that the sort of objectionable writing in question has such benefits or that there aren't alternate ways of communicating the same ideas without being alienating, the primary cost being some extra effort required on the part of the writer.