The LGB community was deeply dysfunctional and odds with itself before they ever took over

There's a reason for this: LGBT, and LGB for that matter, is a political unit, not a cohesive social group.

Well, historically gay men and lesbians always hanged around separate spaces and had different cultures, but modern LGBT activism served only to homogenize spaces and communities.

Lesbian bars, which used to be a thing, are now gone and the same is happening to gay bars, which are now being called LGBT bars because I don't know.

See what I mean?

Simmering resentments- feminine gay men and masculine lesbians haven't been treated as much respect as they deserve in the past. They are, even today, still being used as a support base by trans-activists. You could throw a lot of the bisexual women activists in here as well, empathizing with another group apparently being mistreated in similar ways to how they were. I'm not going to accuse any of them of being shallow or narcissistic without a solid reason. I know better than to trust that impulse at this point.

I doubt that.

TRAs see gender non-conforming gays and lesbians as eggs waiting to be hatched, nothing else.

As several posts on this very sub show, they are far from being the champions of gender non-conformity.