That’s a looooot or claims without anything like citations and support in that blog. It all sounds alright until you realize it’s a house of cards shown to you at a very particular angle under the best possible light. I was sort of curious if it was a one-off from someone who didn’t know how to source their claims, but reading some more on that site it seems to be more like very genteel propaganda. The theme seems to be a retread of old ideas on sex, race, and genetics arrived at by cherry picking results which agree with the premise. Well written prose, but devoid of intellectual rigour.