I think the thing most people are missing is that this "decolonization" isn't about removing white people from historical achievements, but rewriting history to credit the advances of western civilization on other races. In other words, to make "we wuz kangs n sheeeeit" appear true.

Math is racist because not all races have the ability to think abstractly.

Therefore, we must not teach math to those that can comprehend it.

First they say that they taught us math, now it is racist because they suck at it.

Explains why 2+2=5.