I think it would be a good step for Iran to use cryptocurrency for international trade after Iran was banned from using the US Dollar.
And the US government will not take any steps knowing Iran is starting to use cryptocurrency, because cryptocurrency cannot be
controlled by anyone. Although the United States has a strong influence, if it is related to cryptocurrency, you cannot do much.
Because it is impossible for America to close all cryptocurrency transactions.
I can't really say if it is good that Iran is starting to accept cryptocurrencies because Iran has a huge conflict with the US government. But I think Iran made a great choice for legalizing import funding using bitcoin and cryptocurrency, so they could get away from using US dollar or fiat currency.
This is a gamechanger for Iran which is crippled by its own economical crisis followed by US led sanctions, I feel this is the only way left for Iran to international trade which cannot be controlled by US government, hopefully they will someday endorse usage of crypto currency for civillans as well because now they are using t only for huge international transactions and trades not in daily life usage.
They can adopt other currency if they want to but adopting cryptocurrency will be a big game changer to them, and same as you I looking forward that their government will endorse the usage of it since it's a great step toward the adoption and for sure those threaten the economical sabotage will be alerted to the existence of cryptocurrency since they doesn't have any control on it.
They can accept the payments in cryptocurrency. But my question is, what about their exports? Their exports (such as petroleum and agricultural products) are physical commodities and they can't be moved online. So while it is possible for them to accept cryptocurrency as the payment, how is it possible for them to export their commodities without attracting unwanted attention?
Maybe there's a certain deal gonna happen between on online transaction and provably there's something legal actions happening during the exports trade in Iran.