We just are born with it and have to figure it out. It’s basically a medical issue.
I’m sorry, but this is just not true. It’s necessarily at least partially a psychological and social issue. Why am I certain about this? Because there are clear distinctions in the number of transgender people in different time periods and different age groups. Our species hasn’t changed in 10-30 years, but these numbers have changed massively.
If you’re steelmanning the argument of “terfs”, this is the thing they’re critical about. If we are in some easily correctable way causing trans people to appear where they in other circumstances would not, this should be looked into. For instance, the number of transgender identified people doubled during the Covid years. So perhaps it’s not a good idea to hole up teenagers in their rooms every day and prevent them from seeing their peers?
This is not to say that people with this condition (whatever its reason) should be treated differently from those without the condition. As you said, almost nobody wants to be trans, so if it can be actually prevented (in ethical ways, not like electroshock therapy or conversion therapy or some other absolute shit like that), that’s certainly a good thing?