I have, I've picked up a bat and literally tried. Elbow juts up an awkward angle and I loose control of the bat. Thats if I'm trying what the guy did in the video... now if I try to dup Bustos swing, that feels natural. Having trouble seeing correlation between what the instructor is doing and what Bustos is doing. Of course they are both turning the barrel, one way just looks a lot more awkward then the other... sorry Ian not seeing any hitters doing what is instructed in their swings. Maybe somebody can provide a side by side and explain to me how what is being instructed is performed by a good hitter during a game swing... or even practice for that matter
Your question isn't new, I haven't participated in the boards for a while but there's always something being said about HI instruction. You can find old message threads where the older video of Rich and the boy is used as an example of dumping the barrel. It seems to me that's not the intention. It seems the focus of the drills are for feel and to get a better visual of the relationship of hands and forearms. I won't win any technical arguments and I am not an instructor, just a dad.
Anyway, where you may see a similarity between what Rich is showing and what the high level hitters are doing is establishing early rearward acceleration (though not everyone will say that happens or agrees upon how) and maintaining something of an equidistant relationship between the forearms. Once you take the more vertical drill and turn it more diagonal to horizontal, in a plane parallel with the shoulder rotation, like a swing, it may make more sense?