This particular statement is a highly insightful one. My daughter finished OW last fall and her training was very similar. Do all the book work and watch the videos before you begin any of the pool work. That is a much different methodology than I was trained with 20 years ago. When I was trained we would do a section, do the pool work associated with that section and then begin the next section. Yes that made the training take longer but it accomplished two things. 1. The pool work reinforced the learning. The act of physically doing something reinforced the reading and cemented it in my mind. 2. Getting in the pool was exciting and it was something I looked forward to every week, in other words it generated excitement for diving. My daughter, much like Dubious, was a bit overwhelmed by all the reading and really struggled to maintain enthusiasm. It wasn't until we started doing pool work that she got excited.
I realize the reasons most shops don't teach this way. It takes more time, not everyone wants to make the time commitment of 5-6 sessions for classwork and pool work, pressure to churn out students on the production line etc; but, I think there is real value in this more methodical teaching methodology. I wish more shops would offer folks a choice and explain the choice they are making.