for hundreds/thousands of years, we all used horses.  Then the motor car came along:  game over for horses, for most use cases.
Nation states and their fiat/central bank/currencies have existed for hundreds/thousands of years.  Whilst these constructs were useful, we now have blockchain crypto.
If the state of Russia (and its accompanying ruble fiat) was such a compellingly useful thing, the rest of us humans have had ample decades/centuries to leave our lesser home states (U.S.A., Europe, etc.) and 'join' the Russian one.
I note most of Planet Earth's residents have not voted so with their feet.
Buy more coinz.