Only input I have is this - I suck at golf but I started taking all advice I can find and try and piece together what works for me. I teach kids and teens how to hit a baseball ( I been teaching for years) and what I found out over many years is that every instructor teaches different things (talk to 100 coaches get a 100 different swings), but all are similar in most of the key areas. I found out that not every kid/teen can do the same thing on every part of the swing but some things are a must to be a good hitter. I guess my point is teaching robots(every person the same) don't work, but the fundamentals are key and everyone has good points. There is to much focus on the actual robot, It's a gimmick to sell things( I respect that), but Paul teaching has merit, taking what he see the machine is doing and replicating it to work with humans, is it 100% the same? no but the fundamentals are close, correct me if I'm wrong a golf swing needs rotation backwards, to be on plane, have wrist hinged, lag and follow through ( the basic of the Iron Mike), follow though creates weight shift(has to right) to me that what he is teaching - rotate upper body, get your wrists hinged, rotate to start swing keep the club on plane and finish. Now how you get to those is up to the instructor
I hope I don't sound like a fool, just trying to learn golf