This is typical of where this type of thinking goes. Along with comments suggesting posters are somehow "against narratives about slavery."
I always wonder whether people who take this approach really believe there is only one way to think about how to do history, and all the white people (or at least the bad ones) are against it, while all the black and other non-white people, along with the good whites, are in agreement with that approach.
Which is clearly counter-factual, you will find people of all races that agree with the identarian approach, and people of all races who oppose it and prefer another approach to historical study (literature, politics, and so on.)
So these individuals either are actually naive enough to believe that all black people think alike, (and lacking the self-reflection to see how reductive that is of black people;) or they do know that they don't all hold the same view, but somehow are of the view that the wrong thinking ones don't count (if you don't vote for me, you ain't really black.)
I'm sure some of it comes down to the bad habit among many progressives of always trying to paint people who disagree about anything remotely political as being bigots of some stripe, but there is something really distasteful to me about this tendency to box in views with race like this. Maybe because it results in public figures like KB or many others we could think of being called some pretty nasty names if they don't toe the approved lines. But it's really no better to accuse white people of bigotry because they don't accept queer theory and American identarianism, in its own way its just as cruel. It's all clearly intended to shut people up.