You're right because this is so obvious on tier reason for this, though am not blaming them for anything, but life keep teaching us lessons the hard way in other for us to always have an alternative.
This aspect will also determine on whether its going to be a good idea supported by the targeted investors and miners over there or not, but i wish on this that they make it fare for the people just as El-Salvador did.
Isn't it better for them to use bitcoin instead than looking for other means over this, i don't also see it a necessity for them to be comparing themself with China or its currency, they may be the same under BRICS but there are lots of differences among them competing each other alone couldn't solved.