When you allow nepotism and favoritism or even try to pick genders and races and similar groups by forcing equal adoption on people it never works out. Equality of opportunity is what solves this.
Easy to say, like the solution to crime is being nice to each other. Here's a story about equality for you.
The US military could meet its recruiting goals by focusing on the most populated areas, say California, Texas, New York, Florida. That would still fly under equality of opportunity, all are welcome, and it would make sense for efficiency. Higher population density, more kids, bigger schools, less spread out recruiting offices, etc.
The very predictable result of that would be states further out like Montana, Minnesota, Maine, Nebraska, a whole bunch of "minority" states would be very underrepresented. The act of identifying that fact and measuring it would offend a lot of fragile snowflakes, as if I just insulted what it means to be Texan by saying what about Kansas, because thinking about it might make them feel guilty and nobody should force you to think about anything, not ever. They'd spread lies about how kids up north or out west or over there just aren't motivated, there's a problem with their culture, it's their parents fault, it's the school's fault, etc. You would falsely frame it as picking states, forcing equal adoption, and project "everyone will think diversity Nebraskans are unqualified" and I'd tell you like I'm telling you now, that's thinly veiled bigotry and you know it.
That is not our system thankfully. The US military operates recruiting stations in every back woods state and travels to every podunk high school in every sparsely populated county. Marine recruiters will anyway, I can't speak for the others, they're probably too busy dealing with walk-ins to call you back. THAT's what equal opportunity looks like. They didn't just decide gee we should open and staff a whole recruiting station in bumfuck Montana for efficiency. They did it to make sure we have Montanans in our military. You might not see it as the four letter words diversity, inclusion, or equity but it is literally the most perfect example of it working successfully on a large scale. If you really think about the history of our country and its military, how it means something that every state participates, you'd see how important it is. That takes effort and even quotas to make it happen, and we're all better for it. Do you NEED quotas, IDK, not in all cases no, but it fucking works and it's not a bad word. Do you NEED to measure force composition by different demographics, uh.. probably, not always, again, why is that a bad thing. I'm not convinced if we cover our eyes shit will just work out, the Michiganders will just fucking show up, like you shouldn't even be checking.. and driving out to talk to them. You KNOW you would!
So when you tell me "all we need is equal opportunity"... please fucking explain how that actually works because I have the solution to crime that takes no effort too, let's all just get along mkay.