It is indeed very difficult to prohibit the activities of trading cryptocurrencies, as cryptocurrencies are by nature created to be anti-centralized finance. I think it's more beneficial to find a way to legalize it soon than to ban it.
Legalizing cryptocurrency is good, but not all countries can agree with what you are saying, because the conditions and rules in each country are different so it will be a little difficult to implement new things that sometimes conflict with general rules that have been upheld. by residents of their respective countries.