Bloodlust. Go visit Neogaf and count how many people are clamoring for Iwata's head. It's depressing. None of them can explain WHY they would want that. It's just satisfying in a primal human way to see others (higher-ups, in particular) fail.
Very much like politics, where most people are completely clueless about the actual topics - but they all love it when a politician has to step down and "take responsibility".