We need labels because we do not want to be overridden by the default. And that includes labels for the default, instead of allowing people to insist that they are the norm and thus don’t need a label. Hence all the brouhaha over ‘cis,’ a term used to describe people who have a gender consistent with that assigned to them at birth. It’s perfectly reasonable to label those people, distinguishing them from trans people, who have genders that differ from those assigned to them at birth. Both groups of people need to be identified.