Gender is not *assigned* at brith as if we are androgynous beings who have no parts until someone picks what sex we are to be.
The sex of the baby is observed and noted.
If you'd allow a slight modification... Gender is not assigned at birth. It is decided by God at the moment of conception. He decides gender and sex and gives us ever living and unending DNA, XY for males and XX for females.
To libs it is assigned. They are nuts. Gender at birth is what you are and always will be. It’s odd to see that kind of thing down South in the Bible belt. I hate it.