in general when I see it it seems to be along the lines of "it implies that I buy into the whole trans agenda." That is, having the word de-normativizes cisness, it makes it something that can be described. Once you describe something, it stops just being the default state of being.

Thus people who are diverse/multicultural as opposed to people who ... have no culture? Disability versus able-bodied (or Temporarily Able-Bodied, as I am a member of a minority group coining our own label) is, like "not trans", an adjective which is simply defined as opposition,, in a lot of ways. Actually, your "neurotypical" example is perfect -- how dare you have a word that describes what I think should be the NORMAL way of thinking? It's just NORMAL.