> not to argue with anyone on anything unless I have an interest in
I have an interest in my dad not dying, however remote the chance might be, from a preventable disease. However, his anti-covid-vaccine stance makes him a danger to himself and others from this imminent threat.
TBH I don't really think it's something easy to do. You will probably have to go around somehow. Arguing about facts seldom works. Maybe he has someone he listens to so it's time to find out whom it is.
I have an interest in my dad not dying, however remote the chance might be, from a preventable disease. However, his anti-covid-vaccine stance makes him a danger to himself and others from this imminent threat.