This is pure poppycock. If it were true, we'd seen this phenomenon back in the 60’s when wide spread marijuana use came on to the scene.
Besides the legal drug alcohol...which incidentally has killed more Americans than all drugs COMBINED, marijuana is the most commonly used illegal drug and is largely benign as drugs go.
This guy was psychotic. This is more indicative of methamphetamine behavior or psychotropic drug use or sudden halt to the medication.
“we’d seen this phenomenon back in the 60’s when wide spread marijuana use came on to the scene”
I don’t think it was a problem when people threw some marijuana seeds in the ground and harvested the plants a couple of months later.
It’s a far different story when somebody soaks the seeds in some kind of paint solvent, and puts acetone in the water the plant grows in, all in the name of increasing the amount of THC in the leaves. I have no idea what that is, or what it might be doing to people.
In short, marijuana as God designed it is probably OK. The Frankenstein plants these modern growers create - nobody knows for sure what they may be doing to people.