Having their own crypto coin for improving their economy is a pretty smart move . But the support will only be shown by natives .
Obviously China's population will somehow strengthen their local coin ( even though a lot of population includes elderly ) . But the support that is with bitcoin cannot be shaken by any other local coin . The main proof is the rise of bitcoin even after the China ban . But if every country starts making their own crypto coins then that might be a reason of big concern for sure.