@Tandora
Then the question becomes, what do we do about it?
Do we call these children “wrong” and mentally ill , and try to change their understanding of self to fit with our own ? We can do this. The evidence shows this causes profound harm , in the same way that it causes profound harm to try to change a person’s sexuality .
How should we deal with gender dysphoria?
I would say we should do randomised controlled trials, and until that happens we are experimenting on children without really knowing what we are doing.
Without proper research, how are we going to know what approach is better at minimising harm?
Imo, it should be considered a mental health condition; but it's borderline in that having a gender identity that conflicts with biological sex isn't necessarily impairing or distressing, although it apparently very often is.