Not to diminish this bad call but like you said, there were many bad calls and they went both ways. In all these stories it’s about a single call and usually the last one of the game. That is then defined as the “deciding factor”? Not true. They are all deciding factors in close hard fought games and must all be weighed when judging the outcome.
Come on, now. There is such a thing as a call deciding a game. This one put one side ahead with zero seconds remaining. If it goes the other way, the other side wins. That is decisive.
You can argue whether this or that earlier would have led to this or that alternate ending. But that does not change the fact that the last play was decisive, and that the call decided the winner.