Im not assuming they are all the same, rather observing an ever growing compilation of evidence that supports my thesis.
It has everything to do with religion. Religion is a worldview including a view of yourself within the world. Belief that you can be or are gay/trans is an epistemic religious belief. Trans, as opposed to gay, is a more radical form of the same base religion. It has to do with politics because as I mentioned it is entwined with a totalitarian political belief system, similar to radical Islam in that respect.
religion involves spirits/gods. Sexuality has nothing to do with that. It's not religious. It's also not political, unless you force it to be political.
Not every gay/trans person is part of any kind of movement or involvement of what you mentioned. Some people can share similarities and be apart of the same group. but it doesn't mean they're all the same.