Huh?
Because, contrary to an idealistic public view that mental health is taken care of when discovered, the reality is that it's a system that has little recourse or solution other than to medicate into dullness, and if acting-out requires it, into virtual sedation and lockdown. With all personal rights and dignity gone by default.
Most people who went through it would come out traumatised if they weren't already to start with. It's not treatment the average person would give their dog.
Ironically what Sarah Connor goes through in Terminator 2, isnt that far from the truth, plus we shouldnt forget Religion is a legal form of insanity!
Where there is secrecy, state criminality can exist.