Perhaps he is being influenced by the reports of side effects from vaccinations, some cases can cause death and most recently, the ineffectiveness of some vaccines is a topic of discussion, relatively pessimistic but this is a special period and I also feel scared and don't have too much hope, and to be honest, if he is under strict quarantine, vaccination can be delayed to wait for the most effective vaccines. But when we are already living in the center of the pandemic and vaccination is necessary, we can only accept large-scale vaccination.
This is idiotic behavior. 3.54 billion shots of the vaccine has been administered so far (as per Bloomberg). If the adverse reaction to vaccine was so common, then we would have witnessed more deaths from vaccination, than that from COVID 19. But that is not the case. Out of these billions of shits administered, the total number of deaths stand at three figures (and in most cases, these deaths can be attributed to previously existing medical conditions). There is no basis for giving the excuse of side effects to avoid vaccination.
There are people who are still hesitant to get vaccinated, eventually, they will be a liability in the long run because when the world is back to normal, people will be required to get vaccinated in order to live a normal life. What I mean is, like we usually do before the pandemic, like going to the malls, be in crowded places, and etc.