they know this possibility as binance is asking compulsory kyc from its traders. so when sanctions began, it is only a matter of time before it hits the crypto exchanges. so yeah, why not use other exchanges which are not asking kyc from its customers like kucoin but you need to keep an eye on the amount because it will trigger a signal to the exchange.
they are only following for what's to come as they want to abide the protocols of the country where they are operating at.
For now that is the only option they can do because their life became more smaller and smaller for getting more sanction impose to them and I really think that this one will create huge effect to them since prolonging this incident to happen will not help their country but as well they will totally get affected on the effects what they bring. Maybe this one will lead the collapsed of Russian Federation.