It is because the Russia’s Ministry of Finance knows that if the ban continues, they will be left behind like China and other anti-Bitcoin countries out there. Same thing goes to India, in which they also have the change of heart after proposing a ban sometime last year and criminalize those who are holding and trading some BTC or any cryptocurrency.
Warren Buffett even called Bitcoin a “rat poison” sometime in 2018, and recently he bought BTC in a crypto-friendly bank while he dumped some traditional stocks.