Pitcher son in HS often times didn't have the coaches call pitches, especially in travel ball. The HC thought that it was a lesson in learning, you make a mistake, you guys own it.
In college, the stakes get higher. It's about winning and being familiar with the competition. It's the p coaches job to know the hitters, a new coach sometimes has to watch endless hours of video of the competitions hitters to know what to pitch or not pitch to them. Catchers have enough to do with bull pens, hitting practice, and oh yeah, don't forget they have classes and schoolwork. Ever wonder why the same programs seem to be successful? It's because the coaches make it their business to know the other players in their conference, year after year. That's what this game is about at the higher levels, know your opponent or he will beat you. Thats why teams scout one another!!!
In pro ball,beginning at the minor league level, catchers who make it to that level usually can remember each hitter, and they study charts with pitchers as well, and pitchers watch the opposing hitters on their off days and many take notes. Its a lot of work.
And if you ever wondered why some make it and others don't, that's it. Its not because of guess work. And when they make it to the top, they get to call their own stuff!!!
Stats doesn't get it, he never did and never will.