I agree with much of what you say about things. But once in awhile……..
In this case I have to disagree. Instead of calling us Humans, you could more accuratly describe us as a huge mass of genetic mutation. What makes you identify yourself as a male is not a delusion, it’s in your genes. Just as you could have some male parts, and some female parts, or even be born missing some parts, it is because your genes say so. Your genes make you feel like a man. They make a woman feel like a woman. You don’t get to decide on your own if you are gay, or trans. It’s in your genes. That’s not to say that some people don’t choose to act like they are gay or transgender when they are not. And I am sure you are correct to say some are delusional. But then even being delusional, or bipolar, or schizophrenic is “in your genes”.
A transgender person presents as trans starting at an early age. It can be 100% obvious, or it can take a lfetime to fully manifest. Transgender people being in the group with the gay people is perfectly normal. They face the same issues in our society, and should naturally band together anyone else that shares their concern for inacting equality.