Diversity screening limiting applicants at UC in the case of student admissions, it clear that the goal of additional criteria is to change the student body that would otherwise exist absent those criteria.
They didn’t like the outcome of admitting a greater share of students from well performing school districts, or private or Catholic schools, so they came up with “success in a local context” to favor students who would not otherwise gain admission. When they “look at the whole person” or “overcoming adversity” that is to give room for more subjective decisions that replace better prepared students with more “deserving”. When those tweaks prove insufficient to achieve the desired outcome they dump test scores altogether. Since grade inflation essentially makes high school straight As a mere record of participation there is no objective means to identify the best prepared students. Now UC is just CSU under a different banner and with mostly better architecture.
Similar process is underway for hiring I suspect. Adding criteria as opposed to selecting the candidates based on the most important criteria, with the goal of changing the decision to favor members of preferred groups.