Soros bought a big share of Overstock which recently announced will change radically to become crypto-friendly.
Also,
Maybe he understood that every business that has to do with crypto is likely to make profit in the future , like Overstock did already.
IMO crypto is the future, and doesn't seem a bubble at all
The point here is that no matter how the people neglect cryptocurrency, they are always take the opportunity to invest in crypto. I guess that he just made a criticism for cryptocurrency in order to pull out some people in buying crypto. Because if the value of cryptocurrencies will becomes low, he will take the opportunity to buy.
You think it is by mistake some of them will talk trash today and tomorrow invest in bitcoin? Only to come back few months later apologize for calling bitcoin a fraud? They are all in the same category.