[eftychis]

If you are using another country's currency you are tied to their monetary and indirectly fiscal policy which most likely does not align to yours.

In fact trying to get a neutral or deflationary currency is a no brainer. Especially, if you have a small banking system/network.

Of course there are gotchas.

[toomuchtodo]

You are always tied to the monetary and fiscal policy of the majority of a currency’s participants.

Can you make your own currency? Of course. How will you back it? Who will trust it? Who governs those policies? These are people problems people want to solve without people (crypto folks), with expected results (speed running financial regulation). They came at the king (reserve currencies) and missed by a mile.