Its pretty amazing how his EW predictions come to fruition, but why? Why would this pattern apply in a seemingly random fairly large group of traders who dictate the price by their sentiment and actions??
The EW structures also meet the common definition of a fractal. Fractals are natural, mathematical patterns of evolving symmetry found in nature...
In my opinion (which I would love to write a thesis on one day), human behavior seems to derive from a fractal thought process, and thus price movements are also fractal. If you look at the human brain and how it functions, much of it is symmetrical, self-similar, and recursive (see 'The Fractal Brian Theory' by Wai Tsang); I think this is why we see fractal patterns manifest in price discovery.
Based off personal experience, there are lots of securities that display these properties (especially intraday), but some are more apparent than others. Bitcoin has one of the most apparent fractal structures, IMO. Maybe because it has the least amount of artificial market-moving influences (like central bank or government policy).