One point is being missed in this debate. Someone found not criminally responsible today would normally be detained three to 30 times longer than someone who pleaded guilty. We must not ignore that fact. It is absolutely false that someone found not criminally responsible suffers fewer consequences.
The protection of society depends on rehabilitation and treatment. We have provided you with numbers on this. People with mental disorders who go to jail have a higher recidivism rate than those found not criminally responsible who stay in hospitals.