How the coach interacts with the athlete is still the number one determining factor for success and no advanced tech can replace that!
If more information was the answer then we would all produce perfect forehands & backhands, we would have players with unbelievalbe hand-eye coordination & a lot more of us could call ourselves coaches of Grand Slam Winners, but of course reality isn’t like that.
It’s so easy, & I get caught up in the hamster wheel of exercises & drills available on Facebook & Youtube all the time myself as well. It’s so easy to look for new drills & new technologies, but in the end we have to remember that we are coaching human beings & our ability to interact & connect with the player is a prerequisite for good coaching.
The drills & technology can built upon that, but will never be able to replace our interpersonal skills.