Hardly the worst play of all time. Seattle passing it on the goal line in the Super Bowl ranks up there. Pretty much all of Atlanta's 4th quarter in their Super Bowl would apply.
Then there's this:
It was a bad play, but at least there's some thinking behind it. Execution was horrible, lots of miscommunication, but I'd hardly call it the worst play of all time
That fake punt play itself was dumb but it did not affect the Colts season in reality. It did not cost the Colts a playoff win or SB win. To be honest I rarely think about this play. I think of Peyton's pick 6 in SB 44 much more than a dumb fake punt play.
What I will say, is that play has zero effect on my life. I am not embarrassed by it, saddened by it, nor angered by it. It is history. It was a play, that was not executed correctly by the personnel on the field at the time. It is over. End of story.