That’s the point of the entire argument. Elite schools don’t go by scores and grades alone.
Parents who sent their kids to cram school, or tutoring or whatever, and kids with perfect scores are mad that schools aren’t basing admissions solely on scores and grades.
What it boils down to is that Asian American kids are outperforming most other groups on the SAT for whatever reason. Elite colleges don’t want student bodies that are 70% Asian American.