All over the nation thousands and thousands of students are receiving part or all of their education online. Thousands of people earn diplomas and degrees every year in fully online programs. Michigan law now requires high school students to take at least one online class before they graduate. The acclaimed International Baccalaureate programme has started an online version. People succeed with outstanding scores on AP exams after learning online.
As for the PADI OW class, I myself have not dealt directly with it at this time, but I know many instructors who have. We in fact had a discussion about this in our shop recently, with those who have had students who went through it reporting that every one, without exception, has come to the them fully and completely prepared academically.
You seem to be saying that it is not possible because you are a software engineer and know it can't happen.
I am not clear on your point. Are you saying these things are not really happening?