I see some benefit for some very fundamental ideas with young players, but he doesn't talk about how the hands are getting pulled back, which could be problematic. I can easily see this getting translated to the hands getting pushed up and back with the arms to make the rubber band stretch, instead of the hands moving as a response to retraction of the scap.
Here’s his ‘load’ video. He talks about what’s suppose to happen. But doesn’t speak of how to not mess up the load portion of the swing.
Edit: all his videos are linked together. Lol. Sorry.