In years past, I used to believe that the players of old, did mask their game on purpose, by cueing here and hitting there. I don't believe that is true today and have doubts that it was ever true, although there were many in my day that continued to perpetuate the myths of pool. It was an easy and fun way to describe what you didn't understand.
As I have become slightly more competent at cueing, I have come to experience what a lot of the people on this forum have been saying for a long time and that is, it's all about speed, contact location and angle of insertion, nothing more. The accelerating stroke, the follow through, the alignment, the stance, the grip are all powerful but as I learn new shots that other top players make, I realize that it is simply that I can hit the cue ball at the same spot, at the same angle of insertion and at the same speed and I will get the same results.
Now if you don't think length of back stroke has a lot to do with the results you get, then you aren't on the same page. I don't try to get into that many discussions about the how of things. There are others far more competent than I that can explain it better. I do, however KNOW, that if you try different things, you will get different results (I'm not crazy :grin

and if you want to get better at pool you had better be trying things that you don't already know how to do.
I'm sure that when people see me practicing the same shot over and over and over, missing all the while, some of them must be thinking that I am a basket case. What some of them don't know, is that I am trying different ways to make the same shot and attempting to find out what is the best way for ME to make that shot and obtain different shape for the cue ball.
Just yesterday, a young player came up to me and politely asked for some help. He was young, strong, didn't move around too much, had a relatively straight stroke but couldn't draw the cue ball a foot if his life depended on it. I explained that it was all about speed, location of tip and angle of insertion. Some of that went in one ear and out the other and it wasn't until I furiously cleaned the cue ball and asked him to draw the cue ball, that it finally sunk in, that he wasn't hitting the cue ball where he thought he was hitting it. I wished that I had one of those John Barton cue balls. After fixing his grip hand location, getting him to keep his head perfectly still and having him hit the cue ball where it needed to be hit, at the speed it needed to be hit and at the angle of insertion that it needed to be hit, the lightbulb came on and a radiant smile appeared.
Anyway, it's a fun game. Just don't get so regimented that you think there is only one best way to do anything. It is up to each person to work out there own salvation. Sometimes it is difficult to know what the other person is doing even if they are masking it with some idiosyncratic movement.