I've been in that stadium many times when the fans screamed their heads off that ended in a loss.
I participated in the playoff game where fans were going to beat Indy by being loud and could feel the bruised blood vessels in my skull for days afterwards.
It's far more likely that the Chiefs were playing another shitty team, and given the events played with more emotion than they've shown in 2 seasons.
"Silence is Golden. Duct Tape is silver"