DEI requirements is not nepotism, but let's take on the core issue I think you brought up: meritocracy. If you show me two people with the same level of skill and experience, I would say the one that came from the most disadvantaged environment is more qualified because they were able to get to the same level with less support.
But you brought in numbers, let me do the same. L Consider that the minority group you mentioned actually has greater barriers to participate, so those 10 people might actually perform better than 80% of the 1000 of the majority group. Assuming both groups have the same distribution of merit is a fallacy.