Juany118
Senior Master
I don't think it has to be an ethical issue. If he knew two versions, he may have offered to teach the one version, and chosen folks to teach the other version to as they proved to meet his standards. I don't know how likely that is, but it is a version that would put YM on solid ethical grounds without having to teach his best material to everyone. It would be like me teaching NGA the way I was taught (quite functional), and teaching Shojin-ryu (my refinement of it, which may or may not be any better, but which I prefer) to folks who showed enough promise. Shojin-ryu is harder for me to teach, so I could have chosen to keep most folks on the mainline curriculum.
But then ethically it would be something you "hang on your shingle" so to speak, and we have no evidence of that. As an example at my School there is a "seniors" only class held at a special time. Everyone knows about it and knows that you have to show a specific level of skill and control to get into the class. The reason for this is that it has a fair amount of Kali grappling and ground fighting in it. Kali grappling, especially ground fighting, isn't about submissions but actual breaks and dislocations. The Sifu/Guro wants to make sure you have adequate technique and control before teaching these to students so they don't "break" their training partners.
Additionally you would THINK that some student other than WSL would have been taught this, at least one of his sons, given the fact that YM is almost always referred to as a "traditional" Chinese Man and it would be virtually unheard of not to pass down your methods to one of your children. However like I said this is the first time I think any of the YM people round these parts have heard such a theory regarding the pole.
As an example I have heard some people propose the BJD as a point of origin. It is more similar to the empty hand than the pole and it also has certain things, especially regarding footwork, that add to the empty hand. This theory usually pops up in the context of "If Bruce Lee would have finished the BJD, he would have seen WC/VT is not limited to close range combat." However it ignores the fact, that as here, there is no evidence of a Proto-BJD like we see with the pole.
I really think that most people simply end up taking a western context of teaching into an analysis. They can't imagine that a system would be set up where something taking up as much "space" is there simply to reinforce already taught principles, that there must be some larger and more unique purpose to it.