The ban only means that somewhere else it is possible to remove such a ban or simply place mining facilities there. This has already happened with the People's Republic of China - when, after the ban, miners of cryptocurrencies went to look for new, more profitable places to work. As I understand it, they temporarily found such a place in Kazakhstan, but after the well-known events, such people are increasingly looking towards Russia, since all the conditions for mining are available there today.
As the saying goes, if one door closes another opens.
The approach towards crypto varies from one country to another.
So if one country totally bans crypto mining, there will be more countries that are more crypto friendly.
Hence, it won't be a major catastrophe if one country bans crypto mining.
We have seen the effect of China banning its crypto miners, knowing how big was their influence in crypto mining.
And yet, life goes on in crypto industry. Just another bump in so many obstacles that crypto has to overcome with.