Of course, why not?
The only requirement to accept Bitcoin as legal tender is the government itself, there's nothing else you need to take care of.
In order to use Bitcoin, you need to have a device, electricity and money, if you only have one or two of these, you will not able to own and use Bitcoin.
But the big countries and super power will never want someone to have such independency they just want you to be their slaves thats why they have divided people into colonies and now they're ruling them easily.
It doesn't have to be the big countries, presidents in small countries also don't want to see a thing that could become a threat for them. Didn't you know if greedy presidents are mostly exist in small or poor countries?