>What right do you generally have to make a comment to someone else?

They swim. The most immediate. If the parents have not instilled the rules of behavior in society on someone in disregard or intentionally since childhood, then the rest of the members of society will have to do so later, and not shyly shut their eyes or shyly turn away, because they do not have the right to make a comment, encouraging all kinds of shamelessness and unculture.