Thomas Sowell made this same point over 20 years ago in Inside American Education. Stuart should credit him here.
Those of us who have lived through AA admissions knew this way before Sowell, but no one wanted or wants to tell the truth about “minority” academic “underachievement”. The unqualified blacks, especially, always had a chip on their shoulders because they really didn’t belong. They had to have “studies” programs so they could pretend to be students. I never encountered a single black chemistry, physics, or computer science major. I did know two pre-meds, a guy who had a knack for teaching math, and one really brilliant guy whose major may have been bio. That’s the score card for many years in three Ivy and “Ivy-type” schools.