From your own ARTICLE, you've already shot yourself in the foot!
"Scientists have not fully worked out the relationship between marijuana and psychosis"
"People predisposed to schizophrenia are more likely to use marijuana"
So your first two statements (in an already flawed and disproven study, do your due diligence dummy!) basically say:
"We have NO publishable evidence that marijuana has anything to do with psychosis, unlike those that have proven a relationship between marijuana and helping to reverse brain aging, Altzheimers, and pain and nerve relief from MS."
And
"Schizophrenia and other psychoses cause marijuana use, not the other way around."
Wow, you're just making to easy, you drugged up ol' sloth, you!
Please repost, if someone would be so kind?