Ask yourself: why would I want dollars if I run the risk of having them confiscated? And yes, Russia declared that whoever wants their oil if yesssssss they don't want to pay for it in rubles then do it in gold or BTC.
https://www.google.com/amp/s/www.cnbc.com/amp/2022/03/24/russia-might-take-bitcoin-as-payment-for-oil-and-gas-as-sanctions-rise.html