I think anybody who thinks that members of marginalized groups historically, be it women or people of colour, or non-Christians, or LGBTQ, etc, would NOT have unique perspectives that would be meaningful in an administration must be totally delusional.
There is actually a ton of research that supports this. A lot of it was done on boards of directors of large public (Fortune 500 type) companies. They looked specifically at gender and found that board functioned better with women on them BUT you only start to see the difference once you reach a critical mass. In terms of boards, which tend to be in the 10-15 member range, it's 3 women. Why? Because one woman by herself is seen as a token and not embraced into the fold by the remaining men and she does not ever fully belong with them socially. With two you actually saw them pitted against one another because each was trying to prove her worth and trying to align herself with the group she perceived to be most in her interest rather than aligning with the other woman. With three, they actually started to function as a cohesive unit and more importantly, started to bring about tangible change in how the board functioned, the discourse, the different approaches to problem solving and so on. This is real and basically undisputed among social scientists. When you translate it to government, it is not too different - you need a critical mass of members of minority groups for those groups to have active voices.
There have literally been 45 presidents. 44 of whom were straight, white men and I think also Christian (possibly one or two were non-denominational or unaffiliated 200 yrs ago) and one was a black, straight, Christian male (and even with him, how many Americans thought he was a) not American and b) Muslim?). But heaven forbid that anybody outside of this majority group (Obama excepted) felt like maybe, just maybe, their beliefs, values and life experiences would be better represented by somebody who came from a background more similar than theirs? That's identity politics. But all those "economic anxiety" white voters we are forced to sympathize with at least once a week, oh no, for them "colour doesn't matter". I mean what Grade A bullshit.