>The conflict is not a disagreement over effectiveness. It's a misalignment between meritocracy and equity.

A lot of proponents of affirmative action will agree with this. They'll explicitly acknowledge that people admitted under AA will be underqualified, due to factors mentioned in the article:

   [Minorities] may lack foundational skills (taken for granted in more affluent households and schools) and therefore might require breaks from study, which can lead to dropping out. They might have developed unhelpful habits or attitudes formed in teen years, or a sense of identity tied up with being part of a historically maligned group, affecting confidence and performance. [Affirmative action] does nothing to address these factors.

Said proponents would agree that AA is a failure if assessed strictly by these criteria. However, they would then go on to say that the benefits conferred by an elite education to the current crop of AA beneficiaries lead to future generations of minorities being less likely to experience the aforementioned issues, so after accounting for all future externalities, AA is a net good. As Justice O'Connor famously wrote in Grutter v. Bollinger (2003) [0],

   It would be a sad day indeed, were America to become a quota-ridden society, with each identifiable minority assigned proportional representation in every desirable walk of life. But that is not the rationale for programs of preferential treatment; the acid test of their justification will be their efficacy in eliminating the need for any racial or ethnic preferences at all. […] It has been 25 years since Justice Powell first approved the use of race to further an interest in student body diversity in the context of public higher education [California v. Bakke (1978)]. Since that time, the number of minority applicants with high grades and test scores has indeed increased. We expect that 25 years from now, the use of racial preferences will no longer be necessary to further the interest approved today.

That said, it's been almost 25 years since she wrote that (and 50 years since California v. Bakke), and it's debatable whether those future externalities have manifested.

[0] https://supreme.justia.com/cases/federal/us/539/306/