The "right call" is often determined after the fact, as is the "wrong call." If it works the OC is a genius. If not, he's the goat.
Totally disagree. Case in point. 83 Orange Bowl. The 2 pt conversion attempt failed, but it was not the wrong call. I see good play calls that don't work quite often and laughable playcalls that work sometimes.
The ubiquitous term "armchair quarterback" disagrees with you. The whole reason that term exists is the second-guessing nature of the American sportsman. One anecdotal example doesn't obviate a widespread trend.
And to be clear, I'm not saying those armchair quarterbacks are right. Just that they'll second-guess whatever call is made if it doesn't work. Same goes for the guys in the booth, who often dub OC's geniuses or fools depending on the success of the play - after the fact.