I think it really depends on the individual...I really do dislike the idea of one size fits all treatment plans. Especially considering some of the health drugs common drugs for schizophrenia carry...that said some of them really do need medications to keep things under control and are glad to take them. Then some might end up on something that causes them more negative side effects/health risks than helps...and unfortunately some mental health professionals will disregard complaints about such things and refuse to consider different medications(that's gotta be frustrating for people in that situation). But I believe there are alternatives to drug therapy that work for some....Also CBD, a chemical in marijuana is being studied as a potential alternative to traditional anti-psychotics with less side effects/long term health risks so hopefully progress on that will continue.

I already know some studies show many people with psychotic disorders 'self medicate' with cannabis...so its not that terribly surprising one of the chemicals it contains has anti-psychotic properties.

But it varies, depends on the individual with schizophrenia what would happen without meds, and what treatments/help would be best for them. Though some in the mental health field which just assume treat all cases the same and just throw the same treatment at everyone rather than really creating an individual treatment plan that helps that 'individual'.