This is where you lose me. Blown calls did not prevent baseball from becoming America's pastime or America's being fixated on WS day games to the extent radio broadcasts and other means were used to keep even school kids informed. Blown calls happened and, if crucial, were much talked about, but the game still thrived.
To me baseball is quintessentially a human endeavor and humans, thank goodness, do make mistakes--batters, pitchers, fielders, baserunners, coaches, and yes, umpires.