This is fine as far as it goes, but some psychotic people really are dangerous. A percentage become murderous and violent, and criticising the admittedly poor state of psychiatric understanding doesn't make them less likely to harm themselves or others.

Of course the problem is related to wider social issues about permissive violence. If one person murders another because of their delusions, it's a crime and a medical failure. If an entire country declares war on another for similar reasons we assume we're in the realm of politics and history, not mass mental illness.

We're far too harsh on individuals and far too lenient on mass systems of thought and belief that have horrific outcomes.