He leads with an assumption, ....but doesn't demonstrate the modern basis for the assumption to be accepted.
Metrics could possibly do that, if you'd hop to it.
However, you/he others seem to be significantly invested in a single attribute versus the multivariate analysis that is required. There are literally millions of dimensions, with the ultimate minority being the individual.
(...to say nothing of consequence of 100s of individual decisions spread over 1000s/tens of 1000s of days. We'll overlook that for now, just to reduce the attributes to something somewhat manageable.)
Yet you insist on assigning to the individual of a community the attributes of that community on the basis of racial identity.
You thereby do a disservice to the whole intellectual process and all the individuals, black, white, asian, Hispanic, etc touched by pushing such monolithic, homogeneous-believing ideas.