I didn’t say WTA isn’t good. It was just the inability of the pro to get the student to understand.
What is meant by “ultimate blueprint.” There is a one-size fits all for the ATP, if you understand it. Sure, they look different, but all do the same thing. Also, no need for progress when instantaneous success would have to be avoided to not have it.
Again, my jumping analogy. If you tried out for a basketball team, and on the first day, the coach said you were going to work on jumping, how long would you listen to and get confused about “the glute/quad/hamstring kinetic chain,” the “dynamic knee extension,” the “ankle release” and the two-stage toe explosion” that all need to happen, Individually, at precise moments, before you just said “screw this, I’m just going to push off of the ground explosively like I always have.” I just happen to know the “push off of the ground” action for the ATP/modern forehand. Believe me, I am not hurting my arm patting myself on the back over it. It is so simple, I can’t believe I didn’t figure it out much sooner.