I believe the blog was taken down, but there are a few copies of it online, and the author (Christian Rudder) published "Dataclysm", which contains many of the same insights.
As for education and kids, I can see how that can explain the difference between Asian women and Black women's response rate. But again, need a real examination of the data.
It is a very touchy subject, which is unfortunately plagued by both uninformed people and also those who just want to cause pain to to others.