I'm from Argentina.

Buying dollars outside the pittance allowed by the government is illegal, so that's not what we are using to buy bread either.

The people selling bread don't know what crypto is so yeah, you will use fiat for "last mile" payments most of the time.

However, crypto is being broadly used here, I know people who have been receving 100% of their salaries in crypto for years now.

Most of the people doing freelance work will resort to some type of cryptocurrency, otherwise when you get paid you automatically lose 50% of your money. The banks, on behalf of the government, will take your USD and give you ARS at half the real exchange rate.