That is not evidence. That is anecdotal, and anecdotal evidence does not have statistical value.
The irrational hysteria about "stronger and stronger pot" that would make people "psychotic" was around when I was in high school, 30 years ago.
It just doesn't work that way. There are only so many receptors in your brain; after those receptors are full it is not possible to get any "higher", which is why we never, ever read about people overdosing on pot.
What part of “15% of skunk users become psychotic” do you not understand? Is it the “of”? “become”?
Yes they were mentally ill - they had cannabis psychosis.
So you never saw anyone freak out after smoking too much? Do you want to buy a bridge?