Twenty plus years as a marijuana enthusiast, who hangs around with marijuana enthusiasts who became marijuana enthusiasts back when the draft was still a thing during the Vietnam War era. If marijuana caused a glimmer of the sort of issues you claimed it does, I would have 100% heard at least tales or rumors of it, if not experienced it directly, or watch one of my friends claimed by the horrors you describe.
Just admit you're spouting hyperbolic bravo sierra because you're virulently anti-pot and be done with it.
Why dont you just admit your chronic impairment from your heavy drug use?