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 think so.Due to unstable price and no central bank as issuer and regulator, bitcoin can not be used as fiat money as expected. It is.more preferred to be investment instrument than as payment.method. It.is quite risky when it is acceptable as payment instrument for unstable price.