As far as whether homophobia is increasing: I am not really sure, I think it is difficult to pull apart several things going on.
Some is really people upset about some truly dodgy/crazy stuff, especially with gender ideology.
But also some of the other stuff that people feel is targeting kids that are really not age appropriate, or books that seem not age appropriate. They don't like their 10 and 11 year olds coming home saying they are lesbians after all the kids in the class end up in the lunch-time club for lgb students. Drag for kids, even when the parents had no issue with drag.
They also don't really like the whole message they are getting that being gay is all about this kind of hedonistic attitude to sex and anything goes.
i don't think people are really associating those things, besides the gender stuff, with any kind of "queer' theory. Many regular people who were very live and let live, but not involved directly or into activism, seem to feel like maybe they were hoodwinked a bit, or subject to a bait and switch, and actually, it may have been true all along that this is what homosexuality is about, or at least male homosexuality. And they are increasingly not caring when they are told they are homophobic to say or notice these things.
I think this may be a bigger problem for the gay male community to deal with if we are seeing what turns out to be something of a return to a more conservative approach to sex generally. By which I don't mean anti-gay specifically, but one which is not so keen on hedonistic approaches to sex.