If taxation is all you can find to support the idea of governments forcing their fiat money on the people, it’s not much of a case.
I don’t see any need for a case. Looking at the world empirically, I see governments everywhere having a lot of success in “forcing their fiat money on the people”. Even in the third world where not infrequently there is a parallel currency (like USD or EUR) in circulation, the local currency is still being actively used. For one, the government pays in it so if you work for the state or you’re a business which sold something to the state, local currency is what you get.
I don’t see any need for a case. Looking at the world empirically, I see governments everywhere having a lot of success in “forcing their fiat money on the people”. Even in the third world where not infrequently there is a parallel currency (like USD or EUR) in circulation, the local currency is still being actively used. For one, the government pays in it so if you work for the state or you’re a business which sold something to the state, local currency is what you get.