I don't know how I got a down vote, & frankly my dear I don't give a damn, but this isn't my opinion. MLB players themselves have talked about this. Their worth is tied to what clubs want. It's why the amount of balls in play has dropped. However, we all were recently reminded that the ball is almost always in play. Thanks, Blue.
I'm not some old codger decrying the middle reliever, pitch counts, batting gloves, etc.†
Using data to your advantage is wise in all professions & daily life. A good many on this board bemoaned Cohen's tinkering & numerous mid-count pitching changes. Yet, he knows more about the game than any of us.
† I do however abhor the DH at the pro level as well as the one batter specialist out of the pen.