Robo umps aren't as accurate as some of you think, not happening until they get
it right. This article states what I've been arguing. The strike zone is a three-dimensional cube, not a two-dimensional box on the screen. And often the box is not in the correct place. They may be using it in AAA but not everyone is happy with it.
Major League Baseball does not expect to implement an automated ball-strike system or "robot umpires" by the 2025 season, according to commissioner Rob Manfred.