As the professional statistician in question, here was my final word on the subject.
Or in other words both studies are right, they were just looking for different things.
But Damuriajashi has his own pit thread that this discussion can hang out in. I don’t see any reason he has to monopolize this one.
As to discrimination against Romani that ZPG zealot has experienced. I have no doubt that many people she encounters do not treat her well, but I suspect that this has more to do with her being a paranoid misandrist who doesn’t understand the basics of modern civility. But its much easier for her to blame it on racism.