It is true that there is a distinction between the blockchain and cryptocurrency, but to suggest that cryptocurrencies will disappear is not a very intelligent statement, there is no better way of tokenizing an asset than the blockchain and that creates your crypto, increasingly being supported by more businesses,we are going to have more of cryptos
I am not sure if he said that bitcoin will disappear, but i am in his side when it comes to the rest of the coins in the market, most of them will disappear in ten years time but saying the entire billion dollar market is just stupidity, the funny thing is that all the old people who does not have any idea about technology has their opinion and views about bitcoin, i bet he does not understand anything about bitcoin and rather struggling to understand how a coin created in the online has this much value. 