I'm not going to argue with your assumptions because I suspect that they are correct to a large degree.

Most people that started down the Gann path were looking for something that, if it was there at all, wasn't laid out in a fashion where it could be discovered. In addition, most people were looking for the magical golden goose, as I was guilty of myself...and as per the average mentality were not willing to put in the effort to find it or anything more practical. Practical Gann, as I call it, is filled with many of the things that seem to be generally accepted ideas but everybody wants that, "it has to go here by then" guaranteed, no risk involved, market call. No such thing probably exists and even Gann himself admonishes...always. always, use that stop loss...because...you could be wrong. If I was able to call a market as Gann was purportedly able to do...I'd be saying...screw that stop loss...this is full proof.

Back in the day when this place was popping, I would lay out some of the things I thought were of value that I picked up from Gann. Arguments from one end of the spectrum to the other would ensue. So, teaching it, especially in a venue such as this...yea...not likely to happen. Although, the site being as it is now, I suppose one could lay out an idea and it would not generate much consternation. More likely it would die a thousand deaths in the silence of the land of the crickets.

In the end...I agree with you that very few people did much with it.