Because the system isn’t about keeping prisoners occupied or satisfied, it’s a punishment. Forcing someone to continue working in their passion project is t a punishment.

It’s not like all work is the same so therefore there’s no difference. Putting that aside, if the system worked and truly focused on rehabilitation, how is putting them back to work doing what they already were doing going to help them rehabilitate their violent tendencies?

They admit they were very violent and hurt many people. Something needs to be done, why would they something be the thing they’re already doing for fun/money?