Despite all the emotion, there is a point buried here, that if true, points to some of his short comings in game management.

If he really was all about that one play for a 2 point conversion, then Mike McCarthy as a coach is dependent entirely on the health of his squad to execute a game plan. Which means at the end of the game he could quite easily be lost without a path to turn to. And since he doesn't know how to take advantage of leverage except when in the lead, this would put him in a precarious position when behind late.

I don't believe he had only the one play. But I might believe that he had one play he liked much better than the others.