"Why we have nothing to fear from the decolonization of mathematics"
What a load of crap. No one is denying non European contributions to math and science. Its a made uo issue. Acknowledging this point is not an antidote to exceptionalism. After all, science didn't take root (aka the industrial revolution) in thise places.
There are other antidotes to *ethnic* exceptionalism. Read "Guns Germs and Steel" and "Why nations fail" for examoles.