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.
But it is used as currency, but you'll regret when you used this because of the price that we have.
It hasn't own country currency but i think soon it could be more popular and other countries ban it.
Why we need to credit it to china or to others that you said? it is for the whole world. I think it is the currency for whole world that's why no one can mine it as their currency. When bitcoin was used as currency for whole world, it is more good because when you travel at another country, it is easy to buy and at least less hustle.