Like you might think that abstract intelligence and social intelligence might carry over solidarity instead of making people more shitty in that regard. How does that even work? Why does people like that coast in life while those who they seem lesser than them suffer?
Racism is part of elite power structures. Those in power want to preserve it for themselves, not hand it over to non white or non cis people
Also, in those spaces you also have the non-white people who hate other non-white people (generally hate black people) and want to keep the rest down.