If there were a commission being formed to ensure that the rights of gay men and women, would the sexual orientation of any one appointed to serve as head of such a commission be a factor? Would a straight person be an appropriate appointee?
I'm surprised you would ask me this. Of course any sexual orientation would be appropriate; what would matter is that the appointed person is competent and has shown commitment to upholding the legislation underpinning the commission. I would not be surprised if all the top candidates were LGBT but I wouldn't say 'straights need not apply'. Why would I limit my field?
I wouldn't expect a disability discrimination commissioner to be disabled, either.
But even so your situation is not analogous. It is a Sex Discrimination Commissioner, not a Discrimination Against Women Commissioner. Even in the latter case I would still say it's inappropriate (immoral, actually) to rule out an entire gender for consideration.
I can see your point.
While I agree that it would be unnecessarily limiting to take candidates from only one gender or from only one sexual orientation--or perhaps more accurately to eliminate any candidates from a particular gender or orientation, I can also see the benefit for choosing from among applicants who have a perspective which is quite similar to the group being represented.
Choosing someone who is a member of the group to be represented as the head of the agency charged with representing their perspective is politically expedient, for one thing. More importantly, it also helps to inspire confidence from that group in the ability of the leader of the agency.
The truth is that I prefer to use a female gynecologist when possible. I've had male gynecologists that I liked but I preferred the women. Not because the women were better trained or more well versed in the appropriate subject manner but because if I talked with the women about say: heavy menstrual periods, they were more sympathetic and they understood what I was talking about from the perspective of someone who had had to deal with that issue. The men just looked vaguely embarrassed or horrified and either suggested a prescription or did some verbal head patting. There is a lot of hard evidence that a woman's pain is discounted by the medical profession in a way that men's pain is not.
The women would ask more specific, to the point questions and offer more specific, more practical suggestions. The other thing that I noticed is that the men never brought up my sex life and never asked if there was ever any pain, or any pleasure. Nor did they ask any questions that might reveal if I was the victim of domestic or sexual abuse. It made them uncomfortable. The women: the opposite.
At one point, I needed surgery and the (male) surgeon--an excellent, very well regarded surgeon--completely brushed aside all concerns for how the surgery might affect my sex life. His female colleague, a resident, was the opposite. She took my questions more seriously, and advocated strongly for me. The surgeon did an excellent job in surgery and I am very grateful. Although the post surgical biopsy proved he need not have taken such a hard line. But I am even more grateful that his resident researched and responded to the questions and concerns I had about post surgical life and helped me make some decisions about what the next best course of action might be. I am not saying that no man would have done so but I am saying that the only people I have known who would do with respect to this particular specialty have been women.
I am sorry that is more information than you probably were looking for. But there you have it. Sometimes, you want someone who knows what questions to ask and how to listen and how to sympathize. And who will then go on and do their best for you. Of course any of the male doctors (except the ones that I 'fired'--you will understand that I am older than you are and have lived in a number of different locations, necessitating changing of doctors with each move) I've had in my life also did their best. But the women were more pragmatic, more down to earth, and more sympathetic. I have not always had a choice of whether I wanted a male or a female gynecologist but where I have had, I have chosen a woman, more strongly so the older I have gotten. With very few exceptions, every woman I know is more likely to refer to a female gynecologist over a male gynecologist. This does not hold true in any other medical specialty.