The sanctions regarding exports to Russia have to this point been relatively limited. The financial sanctions are what are doing the work right now.

Russia's principle problem is that its own currency is becoming worthless and external currencies are becoming inaccessible. This is a problem for the Russian state as well as individuals residing in it. If a ubiquitous and stable worldwide cryptocurrency were to exist, this would no longer be so much of a problem for Russia, to the detriment of all other sane countries.