A reasonable post.
An important note is I simply asked him if he had access to a clinical diagnosis; I do understand that in a relatively very small number of cases it is possible for pot to trigger a psychotic EPISODE in some who might be predisposed to it, which is far different from triggering the onset of something much more serious such as schizophrenia for example. I was pointing out the issue with the poster linking psychosis/psychotic episode to pot use merely as a layperson's observation with no clinical proof whatsoever.
I'm glad you added 'chicken or the egg, who knows'; certainly when it comes to 'amotivation' I'd say a lot of those folks were already well on their way there prior to getting into serious pot use.
FWIW, I don't claim weed to be a panacea for anything, certainly nowhere in my post.
Finally, we have here a young man who has put himself at risk of a potentially horribly unjust and draconian punishment; our stupid culture continues to mete out ridiculously slight punishments for people with multiple drunk driving offenses, and here in Minnesota we just saw a woman get away with probation for killing someone while driving drunk, yet this kid could potentially be looking at a serious punishment if it doesn't fall his way. We are really and truly stupid here. That said, there may be a universe someplace where it's ok to utilize the mail for shipping 3.5 pounds of weed, but it's not here in 2018 Amurrica. Dumb move; I hope he gets the best lawyer money can buy.