It is something to do with identity. Hard to say what and how it happened. When a man is born in a girl's body, most people these days do not want to "cure" that, and transgenderism is OK. But with age dysphoria, there seems to be other theory behind it. That something "went wrong" and should be cured, the brain should be cured because look at the body, it cannot lie!

I find it somewhat discouraging it is seen this way. I actually don't know why it is wrong and sick to have a young identity.

It causes problems sure, but a lot of things do in life.

If I was given the option to have a younger body or mature mentally suddenly, I would never ever choose the latter. I want to be me still. If other people think it is silly I act like a kid, fine. But I have always wanted to be me all my life and many people have told me I am wrong in this and that and should change who I am.