Retribution provides almost no societal benefit. Most of society doesn’t know or care about any individual crime. Rehabilitation of a single member however will benefit all of society, as you can’t predict all possible social interactions of a single person.
1 in 100 people (or os) is schizophrenic. It's quite predictable what happens when a schizophrenic person takes psychedelics. I am not saying this is your case here. However, if anything your single case example shows inadequacy in the health- and social care systems and not unpredictability of DMT.
If a person hadn't experienced a debilitating depression it's hard to imagine what another person is experiencing. All those walks in the park and hobbies sound logical and wonderful, on paper. Reality is a bit different.
Both engineering managers and engineering project managers are results of an obscure or non-existent vision. When you don't know why you have an oar in your hands you need a person with whip to remind you.