I think no because bitcoin is used for online transaction and the price of bitcoin is not stable, but if bitcoin become stable maybe it might be possible that bitcoin will become currency, but for now, there's no chance that bitcoin will be used as currency.
The other reason every country have their own currency so where do you think the country of bitcoin?
Bitcoin is decentralized and we couldn't just credit it to China or other countries as their currency.
I also agree with your opinion that bitcoin for now is only in use for online transactions not as real currency. but bitcoin has its own disadvantage: its price is changing every time and this is one of the reasons that bitcoin can not be used as a real currency for now but if bitcoin prices stabilize maybe bitcoin can beat the original currency.