The biggest problem for Russians right now, is that if BTC remains possible, very few people are willing to exchange BTC for rubles. The Russian currency was already extremely difficult to exchange in most countries, it will be far worse now.
Yes, if it continues like this, will Russia be disintegrated economically and cut off Swift. There will be many people who will oppose Putin's continued fighting. Will Russia, the great nation, lose in this seemingly complete power? In a war of mismatches?