I agree that the game is different now, but the fundamentals remain the same. There are a lot of things that experience can teach a player which no book will teach him/her even if it claims to. A book can tell you that 0 degree is a cold temperature, but you'll never know how it feels if you have never experienced it.
Now a days there are a lot of resources available to learn stuff about pool, but in my personal experience just being there taking the heat, watching other players, doing it the 'hard' way makes a huge difference.
As a matter of fact, I think that the level / skill set of players today have gone lower, cuz things come easy to them. If they want to learn how to make shot, there is book about it. They don't have to go to their local pool room and gamble / play with some one who knows is a good bank shot player to learn it. They can learn by reading the book or watching dvd and by playing in their basement. People are getting lazy, they are trying to acquire skills that comes after 100 hours of play time by doing it just for 20 hours and a $40 book. IMO that's just "half learning". I seriously doubt that I will see another Eddie Taylor or Bugs Rucker in my lifetime, cuz that's just not going to happen. May be there is a guy who could be like them, but he is stuck selling cars and never picked up a pool cue cuz pool is not as big as it used to be. Can you name a book that will teach me how to play shape like the great buddy hall ? or how to be as flamboyant as Keith ?? or to be an artist like Efren ? The point is just cuz we have all these "resources" now a days doesn't necessarily mean that a general level of play has increased.
People have different style of play, every one learns differently. After a 8 ball break some people see clusters and others see patterns. Good bank pool players see lines on the table that are never there. So, I don't agree with you saying and I quote "when you are staring down a long shot, or a difficult cut, or tough position play on a Diamond Pro-Am, you are not cutting the pocket into segments...".
I don't understand when you say that Cj's game was well suited for his era ?? that don't make sense to me. Pool fundamentals are still the same, you still got to make ball in the pocket regardless of how you aim it, you still gotta know angles, spins, lines, and various other things. The guy is just teaching what he believe made him a better player, and there is nothing wrong with it.
I don't know if CJ is going to win or loose cuz that's something only he can answer.