I think you need to ask yourself why it bothers you so much. If we want to "wave the gay flag," why should you care?If you are gay, fine, but really, does the entire world have to hear about it each and every day? Do you have to constantly "wave the gay flag" every chance you get? Do you have to constantly "demand" to see more gays in movies, sports, music, and everything else under the sun? It gets annoying.
This isn't a counter to your post at all, but in the future, I sincerely hope there's no need to wave the flag anymore in order to declare, that people just don't assume someone else's sexuality anymore.
I love how sexuality is approached in Doctor Who, in that if the Doctor comes across a person of LGBT origin, he doesn't bat an eye; you could be gay or straight or bi, just as how the sky can be night or day, it's just there. The sexual orientation of a character has as much story value as that person's eye color.