Ugh. I had forgotten that. Sounds like a type of racism in and of itself. Selecting/not-selecting based upon skin color? Yep.
Alt right fascists are mostly racist but not always. It seems to come and go with them. Most simply seem to cover it with an "altruistic" desire to see blacks return to Africa. I think that Spencer clown is or was married to a Jewish woman as he railed on about the zionist conspiracies to control..
At the end of the day, whether someone will date a member of another race really has nothing to do with whether they're racist or not. Its a bit like a gay man marrying a woman for cover.