Currently, bitcoin has been able to go global.
Yes, I agree! Now Bitcoin has become an international currency and we can use it to transact anywhere as long as it accepts Bitcoin as a means of payment. Unfortunately at this time there are still many countries that have not accepted Bitcoin as a legal means of payment, so we cannot freely use Bitcoin.
Entering the world market and becoming an international currency is a big difference.
Bitcoin entered the world market a long time ago, but bitcoin, apparently, will no longer become an international currency, that is, the currency that states would settle among themselves in trade and other transactions.
With the advent of stablecoins of central banks of states, states have a good alternative to cryptocurrency. At the same time, states have a good opportunity to combine the best for them advantages of conventional currencies and cryptocurrencies. Therefore, Bitcoin, with its high price volatility, is simply not needed.