I think it comes down to the difference of describing in a third person, sociological perspective and directly naming someone.
You are a human, of the species Homo sapiens. Whether you would take those names for yourself aren't relevant to the fact that we do need a way to differentiate you from other species in discourse in which such a differentiation would be relevant (for instance, many health concerns of a human are different from health concerns of a snake.)
Much in the same way cisgendered is merely a third person, sociological perspective and not a naming of one. It's just a way to conceptualize the power dynamics in a culture. In the end you're you and I'm me. Those conceptualizations don't change who we are. They just raise concerns about how society functions.
no subject
You are a human, of the species Homo sapiens. Whether you would take those names for yourself aren't relevant to the fact that we do need a way to differentiate you from other species in discourse in which such a differentiation would be relevant (for instance, many health concerns of a human are different from health concerns of a snake.)
Much in the same way cisgendered is merely a third person, sociological perspective and not a naming of one. It's just a way to conceptualize the power dynamics in a culture. In the end you're you and I'm me. Those conceptualizations don't change who we are. They just raise concerns about how society functions.