I guess the older gay men are more likely to have experienced homophobia growing up
And older gay people, male and female, have often done the coming out, clubs, dating, groups thing and moved on to settled friendship groups and relationships. More life experience, less dependency on staying in with the in crowd and coming from a time (about five minutes ago) when it was ok to be gay and not something disgusting to fix to other people's demands.
Sad that was temporary. But those of my generation and older are tending to feel we ignored one lot of homophobics, here come another lot but won't make any difference to those of us who are homosexual, doing our own thing and don't need validation or involvement from anyone else to a) do it and b) be happy.
Fundamental difference really in attitude to the current movement we're supposed to be too old and saggy titted to be able to understand is 'better'. Somehow.