In many cases they make a new start as umpires after failing to make a mark as professional players. Furthermore, when they are subjected to a barrage of protest, Japanese umpires do not put up much of a stand. Umpires should never admit their mistakes like this. When they call a strike or strikeout, the decision must stand. To make a correction afterward or apologize for a mistake amounts to an admission of their own lack of competence and leads to a loss of authority.
American umpires make mistakes, too.
And players occasionally protest. On such occasions, however, the baseball leagues always stand completely behind the umpire. And Jim Evans, a prominent major league umpire and principal of an umpire school, commented that Japanese umpires are 50 years behind in their position. The Di Muro incident makes one think a lot about the observation of rules in baseball and the competence, status, and authority of umpires.