Punishment? This clearly was less harsh, or he would not prefer it.
Protecting society? He roams free.
A deterrent? Leaving him there would send the message to others that escaping and evading capture is a viable route to freedom.
This could mean mental health evaluation and treatment, addiction counseling, education and job training to help them learn a skill, and restorative justice.
I'd say none of these things happened in a cave.
I think it should be brought in, evaluated, and released if he no longer poses a threat.
The fact that it was less harsh does not mean it was not harsh enough; meaning that chineese concentration camps might be disproportionately harsh to the crime (although his crimes were among the worst, so...)
> Protecting society? He roams free.
That's an exaggeration, I highly doubt that he could roam free. His maximum radius of travel must have been severly limited, given no access to transportation, plus it looks like so, as he did not move away from that, high risk area.
> A deterrent? Leaving him there would send the message to others that escaping and evading capture is a viable route to freedom.
Nonetheless, it is a viable route to freedom. It would be enforced/promoted if they left him though.