History is gender neutral
I don not see any reason why to believe it. History is written by victorious. And those, who could write (if they survived). It would be perfectly reasonable to have separate native American history study, given how much time is spent on studying white immigrant history (I am pulling this out of my ass, since I live in Europe). If any particular subfield in history is poorly studied, it makes perfect sense to study that particular field more carefully, nut just "whole history". Having separate "white studies" would make sense in, say, Japan, which is dominated by Japanese and impact of west could be an interesting subject. What would "white history of USA" even look like? No mention of slaves? Native Americans? How would such studies deepen our understanding on what had happened?
There are beauty pageants specifically for Blacks and for Latinos
My guess is that if beauty pageants were systematically won by Latinos, and someone made a separate pageant for whites only, there would be no outcry. For some reason you seem to be blind to any social inequalities.