It's dead to those who are even semi-educated about the swing. However, talking about hand path is generally a waste of time.
Uh-huh. You mean like the coach who was asked to speak about hitting at the ABCA meeting this year? The same college coach who was invited to a couple of MLB clubs to go over his ideas about hitting?
Or, perhaps the college softball coaches that promote a diversified hitting style so the batter is on ball on whatever pitch?
It's not dead or a waste of time to them