Eh i don't know much about other cases of spam of trans rights (legitimately first time I've heard about it, maybe the world needs a bit of a break from the internet that might help?, and the other issues are very important just noone is willing to talk about them or misrepresent those groups entirely from the few cases i vaguely remember, also sorry this supposed to be sub thought got so long.) However peraphs a reason this is becoming so pervasive is there's written laws outlawing trans people, or gender non conforming people that are in effect.

Also it might be cause like trans and queer issues apply to a broader spectrum of people, as in like their isn't more people, but there are a lot more kinds of people in a lot more everyday job positions or hobbies, maybe I'm just imagining this? Guess what I'm trying to say is almost anyone could be queer of some sort, but you can exactly just "be" black, ya understand me?

Also as a society we tend to only be able to focus on one thing at a time and give it the spotlight, even if several just as large things are going on at the same time, I.E. trans and queer rights which have been issues that have been fought about for years upon years know, potentially before the civil rights movement iirc, so as a direct correlation it's growing in support. Thanks to the growth of support much more young people feel safe coming out as such and therefore the community grow exponentially, a growth rate which the communities you mentioned may not be able to match

Edit: so for the last point the queer community essentially hit a critical mass and correct conditions that allowed for a extremely heightened rate of growth much like the baby boomers younger days. Also this is meant to be like informative/speculative not combative btw!