Not to Sputnik, but to any vaccination, not limited to COVID. It is known phenomenon: when something is free and is available everywhere, then nobody count as a thing and everyone says "oh, I will do it tomorrow, or after tomorrow, or after-after tomorrow..." Every autumn they starts campaign for flu vaccination. We see ads in shops, cinemas, metro, on TV and in Internet, even in private taxis. And every time they have only 5-10% of population who got vaccination.
Any vaccine is available in any govt clinic in Russia, for free. You just need to visit your local doctor and ask for vaccination, visit is also free.
Govt is thinking about to give some preferences to vaccinated, but every time it meets critics from human rights activists "you cannot discriminate non vaccinated"...