If Russia disconnects itself from the internet then I think they'll face a lot of negative consequences (not only with bitcoin but with engineering and other advancements too).
I wish President Putin is here or has some representatives from his cabinet who can read and tell him all this for him to reconsider his decision. His action will hurt more people than he thinks he will gain. It is the same way the US and their allies should read too. The boycott of the internet in Russia can come from either Putin or the EU as sanction. Time will tell. This war is not only affecting Ukraine, it is also hitting the Russians harshly too. Innocent souls are being massacred in both countries.
In Russia, the people make their own choice. First, by supporting Putin, then by his passivity, and partly by his support for his attack on Ukraine. Did Putin's regime think that the international community would once again not respond properly to the fact that he decided to seize one of the largest states in Europe by force? It was foolish to think so, because here he had already touched the security of each of the European countries. Therefore, Russia received the toughest sanctions that could destroy Russia itself.
Ukraine also helps in this regard, having put up such stubborn resistance to aggression that Moscow has already realized that the "second army of the world" can lose this war. Therefore, first of all, the Putin regime decided to hide from its people the causes, course and heavy losses in this war. To this end, they have already turned off Facebook and Twitter on their territory, and now they are turning off Instagram. But this is not enough, because the information spreads anyway. Therefore, they are already talking about the complete shutdown of the Internet. We believed that no state would dare to do this. But in order to maintain his power, Putin goes for this. If the Internet is turned off in Russia, taking into account the current sanctions, they will soon be walking around again in sweatshirts and bast shoes, and this will be the second North Korea in terms of its closeness to the world. While there is time, let the Russian people make the right decisions