That's a bad line of reasoning. I could try to 10X my investment at a poker table. That doesn't mean I should try, even though it would probably be less risky t

That's a bad line of reasoning. I could try to 10X my investment at a poker table. That doesn't mean I should try, even though it would probably be less risky than putting money into cryptocurrencies. You can pick any risky investment that's currently doing well and say after the fact "look how wrong you were to doubt this". It doesn't mean that investing in that thing at that time was ever the right thing to do. People have been losing money for centuries following similar lines of thinking. Cryptocurrencies, blockchains, distributed ledger technologies etc have been bashed pretty comprehensively by economics and finance experts as well as tech ones, because they are a bad solution to almost every problem they have been thrown at.