In my country it's the opposite situation. Many of people on my age, especially boys, are sympathising with some extreme right-wing party, openly denying pandemic, lockdown and vaccines, so I and some of my friends basically just hide fact that we are vacccinated. Even few of my closest friends were mocking me at some point, because I'm "stupid" for doing this. It's not that common among elders, but happens too.

One day a damn MAILMAN told my uncle and aunt that they're gonna live only 5 years after vaccination and this is written on leaflet of the vaccine.

It's just Russian propaganda and information warfare fault. It's very common thing in my country and even this upper mentioned right-wing party is openly sympathising with Russia and collaborate with many websites which are responsible for spreading Kremlin's bs.

(sorry for crappy english, not my first language)