When my daughter was getting certified, I would occasionally talk with her (before classes) suggesting to perform the training in neutral buoyancy, use frog kicks almost exclusively, and a couple other finer points which she did in fact do. The instructors were impressed as to her techniques, but still taught "the old way"....
The shop continues to configure equipment "in the old way", and even at her open water dives, her gear had to be set up that way. As soon as she earned her card, her first request was to reconfigure her gear to "dad's way".... her comment - "it just seems better"...