This whole vaccination thing. There are plenty of things in life one can do which are legal, but also selfish* and irresponsible. Not getting vaccinated (unless one has a good medical reason) is one such thing. It is deliberately endangering the lives of other people for no good reason. So, while I agree that it should be a person's own decision as to whether they get vaccinated or not, I also have the right to call them out as irresponsible if they take the irresponsible decision.
*"Selfish" is actually maybe not quite the right word, as it's endangering one's own life as well as those of others. But "irresponsible" is definitely apt.