There's "crypto" and blockchain
Etherium is a private operation, ie unlimited coins, most held by owner who can invent more anytime: ie inflation. Then there's blockchain, the base of BTC, ie limited to 21 million coins, fully transparent operations. BTC is now an official currency in El Salvador and you can actually "buy a cup of coffee" with BTC, instantly.
These bozos don't understand the difference between stone castles on a hill and sand castles at low tide. They'll suffer.
My BTC has bumps but no dumps, and it rises steadily, while the USD has fallen 40% since 2000. So much for fiat currency, colored paper...