I don't have a dog in this fight, but what irks me is how, on the one hand, one can claim to accept evolution, a process that works precisely by variation and natural selection, and at the same time rule out, not the actuality, but the very possibility IN PRINCIPLE that there can ever be statistically significant sexual or ethnic variation. If you are of a secularist, materialist bent, you are absolutely bound to accept that possibility lest you fall into holding incoherent beliefs.
To be clear, I am neither rejecting evolution nor advocating racism or sexism. I am merely pointing out that secularism-materialism binds you to accept the very real possibility of things being true about sex, race, ethnicity, etc, that those holding secularist, materialistic views categorically and in principle reject (at least verbally, if not in action) as a matter of principle even though they are bound BY THE VERY PRINCIPLES THEY CLAIM TO HOLD to accept these things as possibilities, if not present actualities.
This is but one of many absurdities in vogue in circles like the SV circuit and its allies. You can't have your cake and eat it, too, and you can be sure that repeating mantras and going on the offensive only works for so long. You have to reexamine your foundational beliefs. The truth will, sooner or later, exact its revenge and come for its pound of flesh. The tension forces of contradiction will cause the facade to cave no matter how much stucco you use to conceal the growing cracks.