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.I think you will agree that his strategy is both teachable and replicable, just really difficult to trade. Since he’s relying on level2, it can only be learned through experience.