Simple, he calls higher highs and is right more often in a bull market but is wrong more often in a bear market. He made outlandish calls in December and January that are still down bigtime.
His major downfall though is him silencing people that provide counterpoints to his TA by flagging them to death. I have had my rep destroyed twice by him and starjuno simply because I suggested coins like Bitconnect were a scam and it was bad TA to suggest buying in at $400. It is now at $1.17, so this is a brutally unfair system where someone can make $300 on terrible advice, and in turn flag and wipe out pending payments because someone argued against him
RE: Haejin - Which Came First - The Predictions Or The Steem? Analysis/Comments Inspired By @berniesanders' Flag Attack on @haejin