How about “Is he qualified?” and “Would he do a great job?”
Probably hundreds of thousands of Americans are qualified and would do a great job. The question I have is what kind of message do we want the appointment to send to the rest of the world. Granted that homosexuality is accepted by many Americans, perhaps a significant majority, but it is also viewed as immoral and disgusting by many, many Americans. So is a openly gay man with a long-term male partner the type of person that we collectively want to put forward as our ambassador to the world (the UN)? The Russians push the message that the Western Europeans and Americans are post-Christian. The Muslims say that we are secularized and decadent. The Chinese afford little to no legal protection for gays. Now I am not saying that any of these groups / countries should have veto power over the selection of our UN Ambassador. But I am saying that this position plays a meaningful role in our messaging so that thought should be given to what we (in this case our great President) want that message to be.