I'm not talking about the current way, I'm talking about the possibility of a privacy-focused crypto, issued by the state, where transactions can be made private with the Blockchain. This crypto, as it would be used for normal transactions, wouldn't have more variability or speculation than the variability and speculation in converting US Dollars to UK Pounds. The post talks in hypotheticals, I do too.
I don't think fiat currency isn't used for illegal activity, I think crypto is mostly not used for normal transactions.