since beginning Rusia want use cryptocurrency as alternative payment from any trades if sanction from any countries come. Mr president also know how big crypto potency for their income by taxes and other regulations. even Ukranian get benefit from donation that used cryptocurrency, and from here we know how usefull this currency when all central bank suspend each others.
I don't see significant activity related to cryptocurrency in the ongoing war between Russia and Ukraine. Initially there were some fundraisers for Ukraine, which accumulated a few million USD worth of crypto, but nowadays I am not hearing much about it. And there were also reports of Russia using cryptocurrency to evade sanctions. But I haven't found any concrete evidence for this. There is hardly any uptick in the crypto volumes within Russia. So there is no supporting evidence to claim something like this.
You are right, although the rhetoric of the Central Bank of Russia has softened significantly in relation to cryptocurrencies (against the background of the initial intentions to completely ban them), but Russia's interest in cryptocurrencies lies more in the plane of mining - as a good opportunity to utilize excess energy resources than as a tool to circumvent sanctions. It seems that Russia has learned to live well under the conditions of permanent sanctions, which intensified in 2014 after the annexation of Crimea, including how to circumvent them.