Can you point out where the people in my hospital example lied? If they never claimed to be doctors, but dressed up and acted as them, is it a lie? Lies come in many forms, some are explicit and others less so.

I don't see them as fools, but as charismatic and intelligent people who have found a way to garner adoration, fame and other benefits by exploiting psychologically weak and vulnerable people. Whether they do so knowingly or not varies from guru to guru. I think many of them do start off with good intentions but quickly find themselves buying into the mystique others have built up around them. They are often as weak as their devotees. Dass falls into this camp in my mind. Is it wrong, no, but I feel it's important to point out.