In my opinion, this could throw BTC in a black hole, as US and Europe would be forced to ban or regulate it to death. (Quickly)
i don't even think bitcoin will fall into a black hole if Russia fully adopts bitcoin and makes it legal tender like el Salvador. Currently, it is not only Russia that is trying to take advantage of Bitcoin, but countries such as the US and Europe are also competing to take advantage of Bitcoin. Bitcoin can no longer be destroyed, Bitcoin will be the safest place for countries that receive financial sanctions from international countries.