Sam, I don't blame people for not knowing when they are cut off from information or satisfied with what they're doing. There wouldn't be the incentive.
I too, use to train, using the more compulsive way. But I have somewhat of a background in animal behavior, (Pavlov, the Skinner box, wolf behavior and other animals) although it's been years. Back then it wasn't applied so much to dog training. When I started looking into a better way to train, some time later, I spent literally half the hours in a 24 hr. day, 7 days a week, for about 6 years, obsessively reading about "positive reinforcement," among other things "dog." And I bought it hook, line and sinker and started applying it to my own dogs and seeing day where there use to be night.
I still have a lot to learn and some old habits combined with my own personality which has loads of room for improvement. However, the information is there and the best of the best back it solidly and compellingly, not to mention first hand observations. The education is there for the taking.
It's just a darn shame that CM is doing what he's doing and people are unfamilar and somewhat detached from their dogs (as dogs) or they'd surely see what body language and expressions are on those animals he works with. Maybe that comes with having been obsessed and fascinated with dogs for many, many years, that connection to see the emotion in dogs, even if we can't know what is positively or completely in their minds.