The thing is that this whole system of belief DOES cause harm. Telling someone that their delusional ideas are perfectly fine and that yes, we can surgically and chemically alter you so that you seem more like how you think you want to be, isn't okay. It especially isn't okay when we start dosing teenagers with hormones in order to reverse their natural sexual development. They haven't even fully developed and they can be expected to understand the consequences of such a decision? Really?