I'm not sure I follow. If a company has 75% from group A and 25% from group B while these groups make up 66% and 33% of the population respectively then it makes sense to address the underrepresentation of group B. But why would we applaud a 50/50 ratio? Isn't that just an underrepresentation if group A? A majority is not necessarily an overrepresentation.

This line if thing seems liable to give credence to the notion that "diversity" is a dog whistle for achieving an underrepresentation of undesirable groups (men, Whites, and increasingly Asians).