We share 98% of our DNA with chimps. Are those of us who have never felt that we are chimps in human bodies cis-speciesd.
I have nothing against people having their bodies mutilated to take on the appearance of the other sex, but let’s not try to rewrite the biology textbook, it isn’t just about having a penis or vagina, there are other organs, very complex ones in the case of the female reproductive system and the so called gender reassignment process is nowhere near being able to persuade a man’s body to grow a womb and ovaries.
On this topic at least, the science IS settled.