The article misrepresents the data, and you're misrepresenting both MIT's policies and the degree to which they reflect on college admissions (even those of top schools) in general.
You're suggesting that the drop reveals a quota, but it really only shows a slight drop from the norm for black students from the period pre-Pandemic (from ~8% to 5%) and a slightly larger drop for Hispanic/Latino students (from ~17% to 11%). Most of the change across the larger timescale has been fewer white students and more Asian students.
Your "abuse" was a handful of years of slightly increased consideration of qualified black applicants post-George Floyd protests, after decades of racial considerations boosting black enrollment by maybe 2% or 3% compared to the most current incoming class's proportion. This boost is slightly higher for Hispanic/Latino applicants, but still not much to consider (insofar as it's roughly equal to the boost in proportion of Asian students).
We'll not talk about the fact that affirmative action is still alive and well in the admissions process, as gender is still a valid consideration.
This is specifically at MIT, which chooses its class from a pool of qualified applicants (which means that, even with the demographic changes, everyone who was there was someone who deserved to be there), without recognition of sports, legacy, and international student interests. This is decidedly not the case elsewhere, where racial consideration had little effect on class composition when compared to the aforementioned.
In short: your grievance is not serious. It's shallow and formed from misconceptions. If you cared about abuse in college admissions, you would accept that legacy and moneyed interests are more of a drag than racial consideration as a remedy to decades of discrimination. The protections were not only valid, but not even given serious consideration until after our most recent reckoning with America's structural racism, and just as quickly torn up at the first opportunity.
https://ir.mit.edu/projects/demographic-dashboard/
https://web.archive.org/web/20240829012444/https://mitadmiss...
https://mitadmissions.org/apply/process/profile/
https://mitadmissions.org/blogs/entry/diversity-or-merit/