He doesn't really care if this was a bottom or not because he knows that the market will be bullish again in the future. If his bottom claims are correct, he'll win some reputation, if not, he'll still win some reputation later when the other part of his prediction about Bitcoin being here to stay will come true. I personally can't say that we've passed the bottom, because the price jumped in 30 minutes, it can easily drop back and lower in 30 minutes. If we had the same growth but in 2-3 months, I'd be 65% confident that we have passed the bottom.