The man who clearly takes the title didn't even make the list.
EJ Manuel is easily the most polarizing Bill of all time. We tend to forget the extreme dedication so many middle aged fans had for a 22 year old millionaire they'd never met who defined mediocrity to a T. It was truly a wonder to behold.
E.J. fanboy love made Whaley fanboy love look like mere adoration by comparison (of course, EJ and Whaley's fanboys are easy to compare because they're mostly the same people).
Doug Flutie doesn't count because that was back before normal people used internet message boards to talk about things like football teams, frittatas, and underwater UFOs. Plus, pretty much everyone outside of Macungie understood that Flutie was awesome and Robosack sucked big floppy donkey dick, so it really wasn't much of a controversy.