So an 18 year old kid gets busted for a drug offense. He gets thrown in jail for several years along with hardened and violent criminals. His "rehabilitation" consists of an immersion in a world of criminality, and when he is finally released, he has a record that will stay with him for the rest of his life and severely limit his choices moving forward.

Yes, he's been reformed. Just not in a good way. Not in a way that does anything to try to fit him back into society.