” racial genetic difference, which has also proven to be false. “
No it hasn’t. You can’t prove such a claim to be false via some deductive argument.
Sickle cell anemia is a clear example of an adaptation that is distributed non-randomly across human populations. Is it just a cosmic accident that Japanese people don’t suffer from it while Xhosa do? It’s one thing to be wary of eugenics, it’s another be to scientifically illiterate.