As an Asian who've experienced discrimination first hand, I am saddened that necessary differences in the gravity of error correction, as applied to group discrimination, is not obvious to everyone. Correcting the effects of slavery is much more important because its effects are much more pervasive. Getting rejected by a top school is not as dire for a group as a while, especially for someone in a group that is not even a minority at those schools. But I could see how someone could say what you said (but hopefully with at least a bit of explanation to back it up?).
Although the "denial of opportunity" seem systematic in both cases - Asians applying to Ivy League schools and enslaved African Americans in my examples - the latter is not due to space constraints. In contrast, Asians have not been or are under-represented. To me, that fact justifies a top school's effort to make access fairer to historically under-represented groups, whose cultural tendencies have been shaped long-term by outright denial.