Hate to say it but trannies have allegedly existed in most ethnic groups. A book I read claims animals have a gender spectrum. For example: some fish like seahorses the males will take care of the offspring. The females lay thousands of eggs and the males developed a pouch to protect them. It easier for female fish to cuck the males biology because they can swim off.

Female Mammals ween the babies on the tit so it's hard to turn fathers into mothers. But primate societies have created a social culture that allows for the child to be raised by non-related parents. Most primates go through a sexual cycle that allows a male to know he's the father of his offspring.

But human males are getting cucked if they can't control the female for months at a time. I believe nature cucks many males physically. Most Gorilla males never breed. They're physically powerless.

Trannies represent the ultimate cucked male. Any healthy society will have a surplus of males. The tranny is revolting because it represents the leftist ideal. A compliant feminine male that subjugates itself to matriarchy.