Well, I have to admit that you and moonslav have made some persuasive arguments for robo-umps. So well done--and I do mean that.
But to me it goes back to the simple fact that the strike zone is the least real thing on the field of play. All other calls are based on did a player catch the ball or not, touch the bag or not, get tagged before he touched the bag or not, hit a fair ball or a foul ball, hit a double or a home run, balk or not balk, etc, etc. In other words, something you can see.
Balls and strikes, on the other hand are called based on the width of the plate, and an interpretation of the top of the strike zone and the bottom of it, based on the physique of the batter, which, I hasten to add, can vary during an at bat. To make it even more complicated, the pitch itself changes trajectories and must intersect the strike zone, I believe, at the front of the plate. In other words, it's entirely possible the camera/computer have the wrong strike zone for a given hitter, but we accept it because its based on technology which dominates our lives in 2022. I recently saw a large photo of at least 100 people walking up and down stairs some wide outdoor stairs (I think at least 30 stairs), and every single one of them was fixated on her/his cell phones.
So, pardon me for saying so, but, if the batter and the pitcher are humans doing their best to pitch or hit (or not swing at) those pitches which not even technology can be trusted to get right, I want a no-baloney fallible human umpire giving his best shot at whether the pitch was a ball or a strike. It's worked for 150 years. I have yet to read a quote from any retired player, HOF'er or not, blaming the umpires for preventing him from being all he could be.
And I look forward to continued griping by hitters, catchers, pitchers, managers, coaches, and bench jockeys because griping is good for the soul. Done by the best, griping can even be entertaining.