I think most of his followers came in during Q4 of 2017, when the market was on an incredible tear. People claiming he made them so much $$$USD. The sad thing is, you don't compare predictions to USD gains. You compare to your best "dumb" move, which is buying into an index fund representing cryptos. Cryptos as a whole shot up, so his predictions were not much better than just "buying the whole market" with no technical analysis at all.