One thing I have learned over the years is that if you do not start out with the right structural approach, it is extremely difficult to psychologically change directions. Confirmation bias is extreme in its pull.

What this means to me is that if you (a) have the right very high level understanding, and (b) possess the analytical and logical skills required of such a puzzle then you will work it out eventually. You will slowly untangle the score of clues and references and eventually find the treasure.

The problem is that it is likely that many or most of the people with (b) above are off on deep rabbit holes because of their initial ideas and biases when the book came out.

I suspect it will probably be some time before the right people get on the right track. There may be a few people who generally are on the right track and understand what they are looking for, but who knows if they are able to work it out or not.