Another important aspect of this is that policing of masculinity is as strong as it ever was. Back when I was participating in cross-dressing forums, I was struck by how much the men there felt the need to insist that, when they weren't "dressing", they were 100% masculine.
The acceptance of gays in mainstream life has been able to happen because being gay is no longer seen as unmasculine per se, and because the gayness that has become accepted doesn't include the presentations and behaviors that were seen as particularly unmasculine, e.g., "femme" gay men. IOW, only the portion of the gay spectrum that is easiest to fit into cis-het norms has actually become accepted. (I think this is why same-sex marriage has been so quickly seen as mainstream.)
The situation with lesbians (and female bisexuals) and trans men is likely to be different (not necessarily better or worse, just different) because gender policing is different for women.