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.
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.