And yet you've failed to provide alternative nomenclature to substitute for cisgender and transgender.
What, you mean other than the terms that I and many others have consistently used throughout this discussion? Male versus female when the topic is sex, with a subset of males being specified as transgender identified when it is necessary to separate them from their normal male counterparts?
I don't find it demeaning to be called cisgender, and I don't much care if others do. Any attempts to manipulate my choice of words by taking umbrage will go unheeded, unless you can convince the mods to intervene on your behalf.
I'm happy that YOU don't find it demeaning. YOU and your sex haven't been the target of non-stop insistence that females who wish that other people would see them as male are just as much of a "man" as you, and that there's no meaningful difference between them and you, and therefore any time you refer to "men" in general, it must be assumed that this also includes some females who take exogenous hormones to grow beards.
FFS, this is like if you said "I don't find it demeaning to be called spic". That's great - you don't have to be offended by it. But to take it that next step and make the assumption that because YOU aren't offended, then nobody should be offended is absurd.
It's especially absurd when you're adopting language that has been framed and designed by one group of people (transgender identified males) specifically because
their feelings get hurt if you don't use the language they prefer. Why do you support protecting their feelings, and feel free to ignore mine?
If transgender identified males exist, so do cisgender identified males.

Sure sure. If Napoleon-identified people exist, then cisNapoleon people also exist.
The problem is that by adopting the term "cisgender", you are implicitly accepting that everyone has a gender identity - that some magical inner essence that makes a person "feel like" a set of stereotypes is a universal thing that everyone has.
This is no different from a religionist making the implicit assumption that everyone has a soul, and therefore even atheists must believe in souls, and that souls are incontrovertibly real.
I do NOT identify as the gender "woman", I actively reject the regressive and oppressive stereotypes that make up that concept. I don't accept them, and I definitely don't feel some inner alignment with the bimbo/housewife/broodmare/porn-object that is all wrapped up in what the trans movement means when they say "woman". **** that **** all the way off the cliff into a lake of magma.