Ah, the old "If you haven't been a coach, you have no right to criticize" chestnut. In that case, why even have a forum like this? Coaches could just post explaining their logic (Dan Quinn: "So that's why it made sense to kick a FG on 4th and goal down 4 with 3:00 left in the fourth") and we could all just nod knowingly and say, "Well, if Coach says it, it must be true."
Seriously, I think most of us understand that there are often additional factors at play that we may not be aware of. For example, after Rodgers completed the Double Hail Mary in the divisional round last year, the numbers suggested McCarthy should have gone for two to win the game in regulation, but I later read an account that said he discussed it with Rodgers and they decided their WRs were so banged up they didn't feel like they had a go-to play they could call.
But surely even you recognize there are times when coaches make these calls not because they have some sort of secret knowledge, but rather because they don't spend
enough time thinking about it. They don't go for it on fourth down
nearly as often as they should. Or to cite my favorite example, the numbers
couldn't be clearer that, if you're down 14 in the fourth quarter and score a TD, you should go for two. It adds, on average, 10% to your win probability. That's huge. And yet the number of coaches who have used that strategy is basically zero. Do you think that in every situation where they had that decision to make, there were extenuating circumstances known only to the coach that explained their decision? Or do you think they did it because coaches are inherently conservative and "that's how things have always been done"?