You raise some interesting questions. When I started this thread, I probably had in the back of my mind that it is unusual for gay people to win a popular reality show grand prize. (I was mistaken in believing that Josh and Brent were the first to win the Amazing Race.) It is unusual, but only because any minority faces a lot of competition in any undertaking. What really is remarkable is that they overcame a number of problems and setbacks, including near elimination, and bested younger, more physically fit opponents. In the end, it was their brain power more than anything else that propelled them into a first place finish. Their victory would have been remarkable for straight guys in the same situation.
What is more remarkable still is that they had an opportunity to show the world that gays are real people, capable of holding their own in a predominantly straight world, and they did exactly that. We can and should celebrate them for what they accomplished and not who they are.