I hope that is true. But I'm not sure.
Prison becomes their home. My last duty station was Ft Leavenworth Ks. My neighbors on both sides were correction officers, and my commanding officer was a buddy of the Leavenworth Prison warden.
One guy that spent 40+ years there, and earned over $20K in money during his time working in the system was arrested two days after his release stealing a vehicle. He had the $20K in his possession.
Another guy that was a trustee, had enough freedom that he was allowed outside the walls to maintain the gardens/flower beds of the staff housing on the property without supervision.
He commonly walked across the street to the convience store to buy soda's.
A week before his time was up, he walked away and had to call the prison to report his own escape. He was in his 70's and had killed his parents when he was 17. He had no life other than prison. That was his life.
That is the reason I say they need some time to assimilate back into society before getting a gun legally.
Has anyone else read Heinlein's Starship Troopers, not the crappy movie, but actually read the book? Criminal punishment came down to a whipping, or death. Prison-free society.