I don't understand your argument. Where is, aside from the word "decolonization", the author of that document trying to "inject identity politics"? And to what end? (And you certainly seem to be concerned by identity of the people making those claims..)

Take a step back and think about how your statement really sounds. It's like saying that "a group of extremist geeks who wrote Unix is trying to inject violence into everything". It's faux outrage that misses the point.