I agree but what he is not saying is that he was never over the total white of the plate on 0-2 A waste pitch has different meanings to coaches. My idea was always they have to think it is a strike. Otherwise, what did you achieve? As a coach, it was easy to know how opposing coaches approached 0-2 and I could prepare my hitters for that.
I've posted this before I asked my pitchers to be able to throw "white," black/white" and "black" of the plate. Black was typically a slider.