producing that hypothesis pretends that a social misfeature [...] is somehow hardwired and thus blameless

You can't derive an ought from an is; the hypothesis that a trait is "hardwired" (that is, that there exists a biological predisposition towards that trait) does not imply that the trait is blameless. Failure to appreciate this point leads to confusion: in particular, we must be careful not to reject hypotheses that might be true, just because they are unpleasant or even horrifying to contemplate.