Please refute his simulation argument and arguments related to AGI, then. I find pretty much everything he says to be supported and insightful. If so many intelligent people like and agree with him, maybe the issue is with your understanding of his arguments than with the arguments themselves.
How would one "con" so many intelligent people for so many years with purely logical arguments, exactly? An argument is either coherent and valid and sound or it isn't. There's no room for conning or personal charm or anything related to the person themselves.