You and ~I~ don't live in different worlds, I also grew up around animals. His clients are largely untrained people who did not have the benefit of learning from you in 4H class. You're just being an arrogant curmudgeon because something about his fame and fortune has gotten under your skin.
If it wasn't for people like him showing the rest of the non-working dog training world, little ankle biters and big dogs with big problems would never change, or their owners wouldn't, I should say. Of course, in an area where animals are used for work and show instead of lawn ornaments, you would need someone more adept at handling those kinds of animals. But his show is about regular "city" people and their inability to simply be the boss.
Cesar makes it very clear on his show that he does NOT train the dogs. He trains the owners on how to handle them. He came from Mexico as an illegal alien, admits he hasn't been certified and learned his techniques while working as a groomer or kennel person, and seems pretty modest about what he does. His whole show is about clueless owners and I think even though some of the cases I have seen will probably never change, overall his work has had positive results.
If the "city" people's dogs had real jobs, they wouldn't need him in the first place. Most of what he seems to tell these owners is that they don't do well with no work, no exercise, mixed signals, and inconsistency. People with working dogs don't have to experience this because their dogs are trained and kept busy.