Bringing Blacks and Hispanics into the conversation is a red herring used by elite universities to defend the indefensible. If you want to see what a truly meritocratic admissions policy would look like, at least in STEM, just see Caltech, where Asians make up 44% of the student body, not the paltry 15% quota the Ivies have consented to grant them.
https://www.registrar.caltech.edu/records/enrollment-statist...
The other thing to consider is that “diversity” somehow fails to consider class. Have you noticed how universities prattle on about racial statistics but getting stats on socio-economic background is like pulling teeth, if you can get data at all?