I recently realized (I'm ashamed it took me this long) that this line of thought is self defeating. Social justice demands equality in numbers. The benefit, they tell us, is diversity in thought. That a more diverse workplace results in a better product or service due to the diversity of those that contributed their ideas.
But these are the same people who also tell us that women are exactly like men and that any difference is a false social construct. That being the case, then once [oppressed minority] reaches parity with the awful cishet white male, then won't any benefit from having diversity vanish, assuming if ever actually existed in the first place?
In short, if we're all the same except for superficial traits, diversity based on superficial traits CANNOT create a different environment.