The idea that supposed prophets were often schizophrenic is hardly a novel notion to academia.
I'm unclear on your motive here. Do you want everyone to think he and anyone else acting similarly is a troll simply to be dismissed? Are you arguing for simply demonizing the mentally ill rather than offering any understanding, because there's a chance they might be trolls? And if they are trolls, might that not be a symptom of a different sort of mental illness?
I assume you're trying to accomplish some sort of goal you think worthwhile, but I'm at a loss to understand what it might actually be.