Assuming the Russian government accepts bitcoin as legal tender to evade sanctions, the US and Europe will impose bans on the crypto. We need to see clearly that the US is looking for ways to kill the Russian economy so they won't give up any way.
A China bans bitcoin, it probably won't affect bitcoin much, but the US and all its allies ban bitcoin, I think that's a big problem with crypto.
It is difficult to pronounce when there are arguments that are very good, and obviously the natural thing is that yes, it is that BTC is a way out for the Russian government and for anyone in Russia it is, because by removing the swift and any other way of being able the Russians receive money, how could it be done? or in what way? if it is blocked everywhere, only the local internal russian banking system is the one that is not blocked but with more restrictions, the only way is to create a mini-economization where everything is bought and sold through btc, and I think those options Putin must have already taken them.
I agree with the colleagues above, that bitcoin is a way out for any country in resolving the embargo sanctions that may be experienced.
I firmly believe that with the embargo on Russia, it is certain that there will also be big countries that will help for political reasons which have been their enemies. China is a country that will probably help Russia to avoid experiencing the hardships of the embargo. If this will happen, it will likely be due to long term political interests.
But right now it is important for Russia to accept and recognize bitcoin as a legal tender.