I want to make explicit that what you're describing here is racism, because I think many people have kind of lost sight of this lately.
You're saying that nothing other than the immutable biological character of one person (Black) versus another (Asian) should form the basis of preferential treatment. I find this abhorrent and wholly incompatible with the notion of a civilized, modern society.
Discrimination in favor of Blacks is racism. Period. What the author was attempting to point out (that you ignored) is that very often the Blacks being admitted are the privileged ones anyway, while highly underprivileged yet talented Asians are completely screwed over.
But no one cares, because the whole thing is a farce. It just needs to look good enough to appease the various despotic progressive forces dedicated to re-institutionalizing racism. This kind of system will never work. It is morally bankrupt in the extreme and it makes me sick just reflecting on it.