A lot of mental illness today is caused by discordant social conditioning. Those who hold power in our social environment no longer have our best interests at heart and our education and religious systems are not just teaching but are forcing unnatural and contrived ethics on us. The ego is constructed from our social conditioning but the inner forces (call it God, the Spirit, the other side) are increasingly at odds with the social conditioning. Because the social conditioning no longer benefits us, we don't really know what to do. In order to get guidance from the Spirit, the ego does, indeed, need to be cracked but that is too painful and costly for many individuals to do.

LSD might be a temporary way or a doorway into a more sane existence. It should not be seen as a long-term solution.

I don't think LSD is a cure for true schizophrenia because it would probably make those problems worse. As far as I can make out, true schizophrenics lack the appropriate filters in their rational/logical/egoic minds to discern between the positive (creative) and negative (demonic) forces that naturally arise from the "other side". Everything within manifests without and it can be too physically destructive for society to deal with.

A person who hears voices in their head or who has other types of visual or auditory or sensory hallucinations might be diagnosed with schizophrenia by the psychiactric "professionals" but many people live with voices in their heads and they are not mentally ill - many consider it to be the way that their inner selves communicate with their egoic selves.

I don't find the psychiatric/psychological studies that you mentioned to be particularly ethical. People are made into guinea pigs and the knowledge gained is often used to manipulate people rather than help them.

Good luck with your health!