Money is backed by a state with the (legitimate) monopoly on the use of force. Is has a worth because you must pay your taxes in it or else.

As such, money coined by a state has an inherit value as long as the state is stable.

Fair.

If something looks, walks, barks and smells like a dog, chances are, it’s a dog.

The world is complicated enough as is, no need to make it more complicated.