Beano, thank you for your comment about the position of the sun. It would never occur to me to worry about it . . . of course, we rarely squint in the Pacific Northwest.
But I'm intrigued with your criticism of the divers as "jerky". At the end, I do see the occasional brief balance loss, but overall, they appear very fluid to me. Do you have any video of your students at the same stage of development (end of AOW, say) to show me what you would like to see in preference?
There were a couple of WTF moments like having students facing the sun, but as another example in that same scece he had them in the water with no masks and unprotected airways, which is just simply inappropriate dive behavior in any conditions. It's easy for it to not cause problems in the pool like conditions that video was shot in, but it is downright dangerous pretty much anytime in my part of the Pacific, as I am sure it is in your part of the Pacific. If these were decisions made for video impact, then the instructor was reinforcing bad dive behavior (and bad instructor behavior) for the purposes of shooting good video. Again, the instructor was prioritizing his needs over the students.
As far as the student's comfort level:
The students looked and sounded like they had just barely survived the training, and had no particular confidence or comfort. Dive training is about moving students to a sense of qualified capability. Of course they do not think they can do it at first, but we walk them step by step to being able to do it.
That course seems to care more about where the diver is in the water column instead of where the students are comfort-wise. Quite simply, operational long-term neutral buoyancy is impossible when students are carrying a significant stress level because they are breathing "off the top", and thus have to be overballasted to compensate, which of course means they were doing their training dives overweighted. At whatever point after the class they end up relaxing, they are going to have to either reconfigure their ballast, or just end up diving while breathing off the top for to compensate.
But the simple physiological fact is that it is next to impossible to relax with nearly full lungs. Students who are not relaxed are simply not able to move practiced behaviors into long term memory or muscle memory. A diver diving with full lungs are never going to reach the level of comfort of those who have to exhale completely to descend.
I don't shoot video anymore, so all I can tell you is that my AOW students who come from my OW course, either directly or with intervening dive experience, have to be taught how to come to rest on the ocean bottom for whatever operational needs in the AOW course (manipulating an object stuck in the bottom, getting low enough to spot a fish/shrimp symbiotic hole). The first time I saw one of my former OW having trouble with the concept of resting on the bottom, I realized that the student simply had never come to rest on the bottom to that point in their diving career, ever. I got a chuckle out of it, because kneeling is usually the first 'skill' most OW students 'learn'. The other AOW students whose OW I did not do always tend to start at the bottom, as in come to rest then add air to their BCD to get neutral or whatever. First learned, best learned as the saying goes.
As I noted other places, I believe strongly in the all skills done neutrally buoyant, either stationary, or preferably on the move. A PADI course taught that way (if the instructor makes the students actually meet the performance requirements like hovering, and weighting for neutral buoyancy) turns out divers with the same ability to maintain their level and trim in the water column. By the end of (at least my) OW course moving (and hovering) in good trim should simply be the only way a diver thinks diving is done. They maintain that position not because I say it is important, but because that it all they know: Diving is neutrally buoyant. And neutrally buoyant requires horizontal trim or they end up at the surface.
As noted, in one way of thinking/teaching, by the end of CW, divers should have spent (at least) several hours practicing fin pivot or hovering. Inhaling and exhaling to adjust height in the water column comes naturally if all the skills other than the intro skills are done horizontally or on the move, at neutral buoyancy. Having a student do a mask R/R and having them end up at the surface because they have nearly full lungs teaches the student more about the importance of fully exhaling before doing a skill (and thus relaxing before doing the skill) than any amount of me telling them about the importance of relaxing can. That lesson thus really never needs to be 'taught', rather students are simply put in a position where they themselves discover it. The same goes with random hand motions and trim. Truly neutrally buoyant divers will propel themselves to the surface with essential any arm swinging (since arms move mostly only in front, thus below, a horizontal diver, pushing them up). An the same goes for horizontal trim. Make a diver buoyant, and when s/he ends up at the surface from kicking in bad trim position, they quickly learn to how to get, and how to stay, horizontal. After they end up at the surface from those factors, telling them why, if they have not already figured it out by themselves, makes it so they police their own arm movements and trim because they don't want to end up at the surface. Require neutral buoyancy at all times, and reuqire random hovering to double-check it at any point during any dive, and the rest is largely self taught.
Again as noted in other places, I think scuba instructors tend to think what they are saying is more important than what a student is learning. This video is full of a lot of talk, and a lot of that exact attitude. Anyone can learn to dive
without any instructor present given enough time. It is, after all, how everyone used to learn how to dive. Our goal, as instructors, is to accelerate their learning, not extend it. After 40 dives, anyone is a pretty good diver unless they are simply bound and determined not to learn anything from their experience, or it they have a really bad foundation from which learning is hard, which, granted, many students have. But that has to do with divers training on their knees, overweighted, not with GUE vs. PADI/NAUI/Etc.
While the GUE course seems to offer a good foundation, it is not very efficiently reached, and I am not sure if divers carrying that level of stress in training will be retaining knowledge or even continuing diving.