Personally I don't care if they're out of the closet or not, but what they do in their bedrooms still belongs in their bedrooms, not in a parade or in a public restroom. We wouldn't tolerate a parade of porno actors behaving in the way gay pride parades do, so why should we tolerate them either.
In San Francisco the NAMBLA people used to march in the Gay Pride Parade (perhaps they still do).
Actually the fights are quite different. Two men kissing is just really icky. In public, it's disgusting. A bare-shouldered woman is not. Maybe provocative depending on the shoulders. But definately not icky or disgusting. That difference is never going to change. The vast majority of people will always, either publically or in secret, regard two men kissing as stomach turning.
That's why homosexual marriage will only be imposed by courts or aberant leftist legislatures (maybe).