Ironically, prolonged high-strength marijuana use might be the worst narcotic for schizophrenics. It really messes with the brain chemistry of diagnosed and undiagnosed schizophrenics and a lot of studies are beginning to point this out.
The homeless addicts in Washington most often use a cocktail of fentanyl, meth, and marijuana and the results speak for themselves. If you travel to any of these places you will notice the huge numbers of young people in these camps and on the streets. This is a real mess and the brain damage for most is permanent.
Many were also medicated in order to attend elementary school.
You are talking about white people and I agree with you. Blacks have a higher Native rate of schizophrenia than whites, and their massive marijuana consumption is making this worse. Resulting in more criminality, aggression and assaults on whites and blacks. Most of the current popular rappers are stoned all day long. And they glorify this in their tunes. And the black youth copies them. Copies their rapper idols.
You are right about the permanent brain damage that comes from consuming too much of today's highly potent marijuana. Curiously enough, the NE Asians (Japan, Korea, etc.) are not into this marijuana sedative. Their drug abuse problem is meth and similar synthetic uppers. They want to get amped up, not stoned.
BTW..... Look around the world, and you will see that consumption of “recreational drugs” is increasing everywhere. The entire world wants to get high and drugged up, on whatever is at hand in their particular culture.
Maybe remote Tibet is the only exception.... Lolzzzz. And perhaps some Muslim nations.