I don't think that Russian central bank is not big enough force to ban Bitcoin, and there are many people inside Russia who are pro-bitcoin,
president Putin even recently said that there are some advantages for mining bitcoin in Russia compared to all other countries.
Officially Bitcoin is banned in China but I know many Chinese people are still using Bitcoin normally despite this ban, and this would be even easier in Russia.
Russia is loaded in oil and gas, if they can't receive euros and dollars, switching to Bitcoin would mean sanctions can't stop their payments anymore.
Yeah they are, and rest of the Europe is very dependent on those resources for electricity and heating.
I think that only Germany has long term contract signed with them and other countries have to pay much higher prices now.
It's funny that in the same time Russia is still under some kind of sanctions
so I am sure they are using Bitcoin to avoid this sanctions.