Adolescent Cannabis Use Linked to Doubling Risk of Psychotic and Bipolar Disorders

https://lemmus.org/post/20350127

This just confirms what psychiatrists already knew for a long time. Cannabis use accentuates the probability of mental illnesses.
More specifically, for someone who has a genetic predisposition to developing schizophrenia or bipolar disorder, cannabis use will make it more likely that you yourself will develop that condition. If you have someone in your family with schizophrenia or bipolar, you would do well to avoid cannabis use, especially as a teenager or young adult.
This is yet again pseudo-science based on the false belief that (presumed) correlation is the same as causation.
I’m not understanding your argument. What about this is correlation and not causation? The body of literature indicating cannabis negatively impacts the mental health of people prone to developing psychosis is pretty extensive, and this is measured against other people who are prone to developing psychosis but who do not use cannabis