I think his point is that the 'critical moments' in an NFL game has a wide net. You have a laser focus on one play while the Browns were up 41-30 and momentum was against us. Sure, that's a critical moment, but there are 432098243 other moments we can label the same way.
What about the big conversion to OBJ at the end of the 1st quarter to get us in the red zone while we were down 7-14?
What about the 3rd and 6th conversion to Landry to get us at the goal line while we were down 7-14? Then followed up on the very next play with a TD pass to OBJ? We avoided a field goal and scored on Mayfield throws to tie the game when Dallas had 14 unanswered and momentum.
How about the 3rd and 10 conversion to Landry while we were up 21-14? Rather than kick a field goal (which could be missed), it led to a Kareem Hunt TD on the goal line. Is that not a critical moment, putting the foot down on the neck of the opponent when given the opportunity?
How about all the first down passes before the end of the 1st half that gave us 3 points?
Were those not critical moments? What's the narrative if he misses Landry on those first downs, misses OBJ on some of the first downs he had? Or even worse, throw picks in those situations? "ThEsE aRe CrItIcAl MoMeNtS tO aSsErT cOnTrOl Of ThE gAmE aNd He FaiLed!!!"
Thing is, you're not wrong about wanting to see Mayfield connect with OBJ on that pass. We all do. We want improvement, and Mayfield hasn't convinced anyone that he has done enough so far. You just need to come to accept that passes like that will happen in just about every game and trying to enhance your position by labeling it a 'critical moment' is not doing you any favors.