Ah, of course, because it's more important to signal one's pure, untainted epistemic rationality than to actually get anything done in life, which might require interacting with outsiders.

This is a failure mode I worry about, but I'm not sure ironic atheist re-appropriation of religious texts is going to turn off anyone we had a chance of attracting in the first place. Will reconsider this position if someone says, "oh yeah, my deconversion process was totally slowed down by stuff like that from atheists," but I'd be surprised.