I have previously heard that it has found a use case in Vietnam and no other country in circumventing legally unusual financial policy, but I haven't been able to find:

* Anything reliable about crypto adoption in Vietnam from a more recent time than March of this year in English (or accessible with Google translate).

* Anything comparing different cryptocurrency proof formats by Vietnamese popularity, including differentiation of non-mineable proof of work cryptocurrencies like Monero.

* A convincing argument that the Vietnamese cryptocurrency market won't vanish in less than a year when their government caves to the State Department and IMF's lobbying and liberalises their banking and payments laws.