These tests will be made from scratch and available by 2025 (really, 2024 if they want to admit
Look, if it is true that a test of what REALLY matters for academic performance is blind to all of the disparities and inequities in our k-12 system (not to mention the wider societal context in which k-12 students are reared and prepared) then those equities don't actually matter. Years of under-preparation? Irrelevant! None of it mattered. The preparation that other kids got wasn't an advantage, and the preparation that some were denied was not a disadvantage. Everything is the same for all people in all context so who cares about anything? Inequality of opportunity is just a lie. (And, well, yes, it springs from falsehoods, but falsehoods can do real harm.) If we accept these premises, then everyone is off the hook for the first 18 years of life, and all responsibility now rests on the shoulders of college professors.
Sadly, under-preparation is real. Some of it can be remedied, because people are (to some extent) adaptable. Some of it can't be, because what happens early in life is (to some extent) of lasting consequence. But pretending that it's irrelevant, and everyone can just be admitted to the same programs that start from the same place and proceed at the same pace, that's insanity.
Let us not talk falsely now. Everybody knows what this is about. Everybody knows what they want. So let's do it. Let's replace the admissions tests with neural nets that infer race. It's what they want. It's illegal under Prop. 209, but it's nonetheless ethically defensible (at least from certain premises), so do it, and let the righteous battle be joined. Fight for principles and premises that you believe in, rather than demanding that we all tell lies about preparation and tests. My 100% sincere opinion about affirmative action is that it is far more honest than anything else we do in higher ed, and I hate lying more than anything else. So let's do it.