Ask anyone who really trades and they'll tell you the same thing - entries have about 10% importance in making money. That's why predictions are worthless, it's how you manage a trade that's important. People should spend 90% of their time planning the exits, where you make the actual money.

I don't really have a view on the Haejin thing, if the system allows itself to be abused then people will abuse it. His technical analysis is terrible though, you can tell by the language he uses and the way he misinterprets indicators that he's 'newb retail trader' level and probably doesn't trade at all. Just my opinion though.