Wow Frank. You sure know your primitives. But as far as casinos go...hmmm. If I remember correctly, you have to go to some sort of "school". Sure, they're mostly set up in trailers, but they're accredited. In the sense that all the casinos recognize said "school" as being able to turn out graduates with good card handling skills, maths skills...and the ability to pass some sort of background check. Then the casinos retrain the graduates to their standards and do their own background, drug and pseudo psych test. Wouldn't you?
Then you start out dealing in crappy casinos like everybody else and you work your way up to the big leagues. You couldn't get even that far if you were a screw up...that comes later.
I sort of knew a bitter guy who used to be a dealer. He got canned for...well...being a jerk. Turns out you need people skills to be a good dealer. He thought it was a plot against him too. He just couldn't realize that he was the problem.
Again, I don't think getting fat would get you fired. Unless you had crumbs in your beard and stank like sour milk.
So I have a sneaking suspicion that the elephant man took out his low opinion of himself on the customers. I know I couldn't handle listing to a blackjack dealer bitching about not being able to wipe himself.