I've seen plenty of evidence of it happening, I'm afraid.
And I worry about it. Genuinely, I do.
I've heard lesbians and gay men expressing their concern that being linked to not just trans people but more specifically to people with kinks and fetishes is jeopardising the acceptance that same sex attracted people have fought so hard for.
There's a rape survivor who sometimes posts on Mumsnet who is taking the Survivors' Network to court over their refusal to provide even one rape crisis group which was strictly female only. Before that happened to her she was very pro trans and may well have agreed that TWAW and all the rest of it, but now her eyes have been well and truly opened to the staggering unfairness and safeguarding risks inherent in forcing women to share their single sex spaces with members of the opposite sex.
There are too many examples to list here but I think there are very clear signs that people's attitudes towards trans people in particular are hardening (and this is backed up by all the recent polls on the subject), and since the T is apparently now indivisible from the LGB there is, I think, a legitimate worry that LGB people will also feel the effects of this.
Even just things as basic as most employers in the public and private sector turning everything rainbow coloured and holding pride events during pride month when they don't seem to give a shit about other, equally valid causes such as disability awareness, is starting to get up a lot of people's noses.
For me personally, I have always been and remain totally supportive and accepting of gay people, but in the last couple of years my instinctive reaction to seeing the pride flag is an eye roll. I don't think that's a good thing.
If you think that people who are getting very fed up with some of this stuff are a tiny minority that you don't need to worry about, I fear that you may be living in a bubble and need to actually listen to the people you disagree with and consider whether they may have a point.
As for your last point, I think it is really distasteful to compare this to people who want to bring back hanging, implying that there is a right side of history and a wrong side and you are on the right side.
I don't think that people who want to force women to share their spaces and sports with biological males, or encourage the transitioning of children too young to understand the consequences of what they are doing, are on the right side of history.
None of this, of course, has anything to do with gay people. But I feel that the lumping of all these different groups together with gay people is causing gay people quite a lot of reputational damage in the current climate.