I agree 100%. But what does a pitching coach teach today? My DD pitching coach is very old school. He wants her to step,with NOT a long little leg stride. He wants more movement. This is were me and the PC and me and my DD but heads. I want more leg drive i.e. Like what I see on TV BUT with movements. I feel what has been happening in the college level today is going to steer the ship on the other wrong course or run us aground.
The length of stride and leg drive has nothing to do with leaping. Most often leaping starts with poor upper body mechanics and then flows downward. There is a plethora of information in the pitching section on what causes leaping and what to do to resolve it.