It will have a strong impact on the purchase of all cryptocurrencies on the market because countries in conflict definitely need tools to defend and attack, such as guns, cannons and various weapons of war.
If an invasion or coup occurs, etc., commodity prices from various sectors could increase due to high demand for war supplies.
Cryptocurrency is a decentralized financial sector and does not have restrictive regulations (it is not centralized).
Perhaps at the beginning of the invasion, there was a fear that there would be an embargo, so it would clearly have a strong impact on purchasing crypto currency in anticipation that if it was needed later, it could be used to purchase all kinds of commodities that did not require local money because of the embargo. So you are right that crypto is not centralized and easy to use if there are problems with transactions with local currency, but that was the beginning of the invasion. It seems that now the Russian invasion of Ukraine has anticipated this and there will be no problems, so the impact of the current invasion This is no longer felt in crypto.In principle, every time there is a conflict in a country where an embargo occurs, the solution is that the use of crypto will increase to anticipate problems that might occur.
So far we see that Russia as a state does not use cryptocurrency in its trading operations on the international market. Due to sanctions imposed on it for waging an aggressive war in Ukraine, it is deprived of the opportunity to use the dollar, euro and other currencies that are widely used in the international market. The state does not want to take the Russian ruble, so Russia, while supplying its products, tried to take it with national money, such as the Chinese yuan and the Indian rupee. But big problems arose with this, since not in all cases the Chinese yuan is accepted by other states, and the rupee in large quantities has become impossible to withdraw from India. But even after such problems, Russia did not switch to payments in cryptocurrency, because this requires the consent of the trading partner country.