You said it yourself, level 2 is not something that can be taught, it varies so much, with enough screen time you eventually get an idea of what to look for, if a trader tries to trade like he does they won't be able to absorb the big losses like he does.
Im not. Lots of edges out there that work. People wont take the time and when they dont make money they think its the edge when its more than likely them. That ego will get you everytime.