The hard part of pitching isn’t getting the ball over the plate. A major league pitcher can throw strikes down the middle of the plate all day. The hard parts of the job are hitting the edge of the strike zone and figuring out where that is today. Automated calls of balls and strikes will remove that second part of the game.
I was an Atlanta Braves fan for decades. In the 90s, the Braves had two all-star pitchers, Tom Glavine and Greg Maddux, who lived 6 inches off the plate. They had the rep and got the calls. Was the way of the game.