Keeps it simple, letting your body do what it does. This is a condensed version of a lot of good info IMO. I know this may not work for all. My frame of reference is having a sports background so decades of athletics help with bracing and weight shift, and maybe if you don't have that your body will need to learn to brace, but for me at least this is a great simple video for people that know the basics of terminology and grip without getting too deep into body mechanics.
The exception is the straight line part but as a "feel" queue I think it's fine and probably helpful for many. It only becomes an issue if you have a camera looking down and actually work to make it all a straight line.