Let me count the reasons:

cunning but not smart

totally uninformed - googles his way through interviews (or Tommy does)

egomaniac and narcissistic

agrees with whomever he's talking to - works off index cards no doubt and cannot converse spontaneously.

FEAR MONGER

WAR MONGER

obsessed with a childish concept of eeeeeevil


he job was to dumb down the show and he did a bang up job on that.