To be clear, I'm not part of the group that is downvoting/mocking haejin. I'm just speculating why they might be doing it. If the guy really is a scammer, then I find it hard to feel sorry for a scammer being mocked.

Regarding TA more broadly, it's all a "scam" because it relies on a self-fulfilling prophecy to work. The only reason support lines (to name probably the most common analysis) work is because of the conditioning of the market participants to accept it as a valid method. It's a case of the tail wagging the dog, not the other way around. Now with more 'out there' analysis like haejin seems to be doing, the tail is going to be smaller, so it will be harder to wag the dog with it. But he does seem to have a lot of followers. He might very well be affecting the market with his proclamations. I don't know. Someone would have to look into the stats and numbers involved. One possibility is that his bizarre metrics are in fact a higher order abstraction of lower level conditioned behaviours that the more simpler metrics focus on. So in essence he might actually be successfully predicting how much and when the tail wags the dog. In which case, he's onto a good thing and if it makes his followers money, then who are we (collective) to say he can't get that much reward out of the reward pool? Unless he's using multiple accounts and bots etc to push his posts up into the trending pages.