Yes, aog. There's a gay pride week, a flag for gays, the slogan 'proud to be gay' yet there's no no "Jews' pride week" or "Proud to be Jewish" slogan. And that's a minority which has been abused, discriminated against,and treated as outsiders, and many Jews always kept their Jewishness private ,lest the non-Jews took against them. Just like homosexuals have been in our time.
These demonstrations will come to be regarded like the Veteran Car Run; a traditional event , celebrating a freedom, which no longer needs to be celebrated.
But it's simply not true that all, or indeed many, gay men go around announcing to all and sundry "I am gay". But do you find it offensive that any do? If so, why? I suspect your question is not mere innocent curiosity but prompted by a sense of unease. Gay men have thought it wise not to mention it; society was against such an "admission" and the consequences damaging. The fact that some well-known people have felt obliged to pre-empt such a claim by the press by announcing the fact themselves, suggests that society still has a tendency to think in the old way