You can't reinvent it.

Some time ago we heard about a couple in Canada who have a new baby and they are NOT announcing which sex the baby was born. The theory is, the child will choose their own identity, and decide for themselves which gender they are. Supposedly, we aren't born a particular sex, we're socialized into it, and to be free to decide who we are we should not be treated according to a gender type.
It sounds 'try-hard' to me.
Just for one thing, people have the physical characterisics of one gender or the other. We don't have either ovaries or testes because of the way we're raised, we're born with them.
Still, some people insist, we only learn to act "male" or "female" because we're treasted like one or the other.
That theory was discredited by the case in which Dr John Money surgically reconstructed a boy as a girl, thinking he would just grow up feeling like one. But he did not, and eventually had to be surgically reconstructed over again, as a boy.
If someone knows I'm wrong, please tell me. But I thought behaviour was in part influenced by hormones, and hormones depend on which gender we are cast from conception, whether we're XX or XY. In other words, we are set to be one or the other right from birth. So it is not an environmental thing, it is inborn.
This is the same mistake the marxists made, thinking they could reinvent human nature.
Tell me if I'm wrong. But I recall the Word of God saying, "male and female He made them" and we are meant to be one or the other from birth, society doesn't make us into it. God intends us to be.
We need to stop trying to reinvent what God has made, because we only make a bigger and bigger mess. God's design is sacred, human intelligence can't even properly understand it. Humans can't make other humans, they can only carry out the process of fertilization and gestation that God set up. We are getting above ourselves thinking we know better and we can improve on it. Where will it end?