If we are talking about sociology journals, then yes, I agree, cis is the right term. If we are talking about general use, like in newspaper, then there is natural reaction of bewilderment - why would you need this term? Please understand that most of the people (me including) do not meet/do not see trans people in their lives (at least they do not know they are trans). I personally know exactly zero of such people. So, the world from the point of not-trans person looks very different - they read about trans people on internet and in the news, it is rare phenomenon, that is not even observed by them personally. That's why it seems as really unnecessary world. Do you have a special word for non-albinos or for non-red-heads? And those (albinos and red-heads) they see in their life more frequently.

And here is where insisting and pushing this word on other people comes at disadvantage to trans community - the right will use any opportunity to use bewilderment of non-trans people to propagate whatever stereotypes they want to propagate about trans. They will say that trans people are "forcing" other people to call themselves "cis", and that this is derogative term, and nobody likes to be forced to do something like that.

You can always use the word "non-trans" if needed. But insisting that all others (who are like what? 98% of people?) have to have a special word for this is strange. It is like insisting that non-albino should be a special word.

And importantly, asking for some kind of special status for cis people so that it requires a special word, as if it is important and fundamental to split people into these too groups, as oppose to being trans is just one of the many features of human being, somewhat rare, but not something to be so important that not being trans must have a separate word. By insisting to have a separate word you are moving away from acceptance of trans people.

And while I do understand that in today's society with many bigots it is sometimes difficult and important process of "coming out" and admitted that you are a trans, thus, indeed, for a trans person, today, it might be the most important thing in their lives, their identity. But in ideal society it just should not be so. So what that one person is trans, and another is albino, and yet another is red-hiared? Nobody should think twice about these variations of humans. I mentioned. I want to move towards ideal society, not away from it.