I think that guy is wrong and possibly playing some game. Those who won with that instinctively disagree, but I think these cryptocurrencies are a scam and the promoters are looking for losers in a musical chairs game.
crypto as we know it is or will be completely different than a Central Bank Digital Currency. I don’t think crypto is a scam. Some of them are but not all. Thing is, you can’t have unrecorded P2P transactions and have CBDC work so they will find a way to do away with all digital currencies except the CBDC. Once there’s a CBDC, regular crypto will be made akin to tax evasion.