Crypto may not save Russia from sanctions, but it can save people in Russia, Ukraine, or Taiwan, or places anywhere near those places from losing money.  You can leave anywhere with your bitcoin.  Trying leaving, say, Hong Kong with a few ounces of gold.  Think about the rules for gold in India too. 

So I'd say crypto may or may not help the governments in these places, but it can definitely help people who are paying attention.  Of course this goes for everyone around the world.  A large majority of politicians are power-hungry crooks who are willing to sacrifice their people and liberty for money.