There is no LGBT community

[Insertnamehere]

That's dismissive.

His dialogue was there is no gay community anymore, and I agree.

Telling things like they are is not being dismissive.

Yes, I agree too that there is no such thing, although not for the same reasons.

Read his OP, he's not talking about a prior time vs a current time, he has a problem with some of the components that are widely accepted as the "community", he even says so himself, he finds it offensive.

Here, I'll give it to you so you can read it again

I've never liked this term and try to ignore it but it's everywhere now, with varying other letters and identities added on to it which makes it even worse

My community is my boyfriend and the people who care about me. I will be honest I've never met a lesbian I liked and I've known a few, being told I'm in a community with them or any other random ambiguous sexuality every five seconds is insulting

Seeming how you yourself stated very correctly that the merge was made for the fight to gain rights, it is clear that he doesn't have that in mind and instead the statement he made is mainly due to his declared distate for lesbians.