Interesting update. Of course, he is still very cautious and warns to only invest money you can afford to lose, which still keeps it in the realm of option trading, etc. But it's not an outright "never buy". I have a similar position. I can't say if bitcoin will go up or down, so I don't put my money there, but if others believe in it, I think they can put a small portion of their portfolio there. The risk is people betting everything they own on something that is still highly uncertain. That makes it more like gambling, which doesn't often have a good outcome for the gambler.