Yes, it is.
I have a strong conviction for rehabilitation and treatment. I grew up in western Canada. I worked in CSC. I conducted research for CSC. I was a correctional officer at one of the low-medium-security federal facilities. Coming out of the academy, I was assigned to this facility because of my conviction and dedication to treatment.
In Canada, we do treatment well, or we attempt to do it very well. So yes, that approach helps a lot. But there's still a need for that serious violent small percentage who continually resist the lower-level sanctions and interventions.