Bush hatred blinds to the other sides of the argument, and constrains the hater to see a monster instead of a political opponent. Which is, after all, the point.
Demonization of an opponent is a long-standing tactic, most often used against nations, but now it has infiltrated domestic politics.
Indeed - the use of personal destruction as a political tool was refined and perfected by the Clintoons. It is a significant part of the Clinton legacy.