I don’t think that’s what we call crime. Isn’t crime the direct violation of government regulations?
By your argument, the use of _any_ currency other than your own government’s would be a crime. Or, is the use of every currency a crime in every other country? When I exchange Euros for JPY in the US, have I committed a crime?
As far as I’m aware, there are no laws against the use of cryptocurrency. There are plenty of laws against things like securities fraud and fraud in general, and those are all generally well and good.
> Some governments have been financially irresponsible in the past, so we need a tool to allow us to bypass all government regulations
I think you should probably gain a clearer understanding of how the currency markets have been behaving over the last year. Many currencies have lost >30% of their value against the USD (which might not matter so much if the USD were the same status as the others).