I suppose it depends on your definition of insanity.
He’s certainly evil, stupid, incompetent, and in way over his head. How many of his actions are the result of these characteristics? How many are the result of someone (or several someones) pulling his strings?
If he’s getting his directions from multiple sources or from an insane source, it might make him look insane when he really is not.
Evil + stupid is a pretty close approximation to insanity.
I forgot to add lazy in the extreme.
Evil + Stupid + Lazy = “debilitating and dysfunctional 0bama complex”