Just for the sake of information, there is in Vayikra [Leviticus] a death penalty for sex between two males. It does not matter if one of the males cuts off his penis and makes a hole. He is still a male.

I recall this from a few places which I have not been able to review for years. [Of course I still hope to do review God willing].

One place is the subject of the person born with two sex organs. This is in the Mishna itself, not just the Gemara.
And that Mishna is brought in plenty of places that I ran into when in Shar Yashuv and also in the Mir in NY. And just take a look and you will see that cutting off the male organ would not make the person into a female even with a natural vagina. He is still half male.[So even way back in the time of the Gemara it was crystal clear to people that the difference between male and female is in every single cell of the body.]
[I ran into this when I was doing Hulin about the subject of a "Kvi" an animal that is between two species. I also recall this in Yevamot. But Sanhedrin where the main subject of the death penalty for sex between males comes up I simply did not learn in those few years I was in NY. Sanhedrin is a not a "yeshivishe tracate"]