I'm sry, but I've been to lots of psych wards in Germany, and none were anywhere near this restricting, and there weren't many incidents.
Patients attack you cause your system treats them like convicts. Treat them like a human and they will react way better
This is not a good thing.
It shows people it's okay to misgender someone you don't like
It won't feel bad for him. For him it's a joke that doesn't do any harm. For trans people getting misgendered is life and can deeply hurt