I will of course agree that equity programs are completely susceptible to flawed design and implementations, like everything else.
What makes it difficult to have productive conversations, is that it's very difficult to untangle who has a problem with a given program, versus with the concept of equity (as a theory to make things fair), versus with the fundamental goal of making things more fair, since not everyone even knows for themselves what side they're on, and they freely swap arguments and forces. This is, of course, hardly unique to equity programs, but I think that schools are somewhat unusually susceptible to strong, uninformed opinions, since everyone has to interact with them at some point in their life, and is affected by how they're run for the rest of their life, but not everybody has actually recently bothered to look under the hood. But, I will agree that there is nuance, and we may find that our current approach to thinking about equity programs is fundamentally flawed, and there's even some broad benefit to some level of tracking. I just want to push against people that follow their intuition and present that as established fact.
I will leave you with perhaps my most controversial opinion on the matter, and open myself up even further to criticism by saying that I don't have children, and don't currently intend to ever: People love to throw around the truism that it's natural for parents to want the best for their kids, that you can't ever blame parents for doing whatever they can to give their children every advantage, that, on an individual level, you shouldn't expect altruism from parents if it involves any sacrifice on their kids part. I strongly disagree. I think that parents should be able to recognize when granting their children an advantage disproportionately harms other kids, should value challenging their kids, pushing them to step up, to make their own sacrifices for the sake of others. If nothing else will motivate them, it should at least be clear that their kid will have to live in a world populated by other people's kids, and so we should want those other children to also be happy, healthy, functional, and well educated. Their child may face more competition, but that will also be healthy for them, and help them grow and develop as an adult. I think it's asinine to argue that parents should have a free pass to behave antisocially for the benefit of only their own kids, that it's a bit of a thought-terminating cliche that excuses parents from prosocial expectations. I understand that parents are, fiercely motivated to protect and nurture their children, and I don't think that instinct is wrong, but I think it can easily grow unhealthy, and that they have every bit as much of a responsibility as everyone else to think of others. Maybe more, since those others will eventually be the people that shape their children's world.