I think you mean quotas. And the method you suggest is probably the worst way of achieving diversity, there are others. Perceiving white males to be hard done by is amusing.
Here’s what you don’t get: none of these groups are homogeneous. It is perfectly plausible for a “white male” manager to discriminate against a white male Worker if that manager is incentivised to do so, either explicitly or implicitly. I mention in another comment an example of Google systematically attempting to disempower Workers (for which members of the boss class gave those bosses a mere slap on the wrist)
Class trumps race, gender, age, anything else when analysing anything from a company to an entire country.
https://en.wikipedia.org/wiki/Gender_representation_on_corpo...