system
A chat on subreddit /r/NoStupidQuestions
human
I don't see much of a problem in English, as they/them is already used to describe a person whose gender is unknown. 

In my native language it's a different story, since there are no genderneutral pronouns. There are several terms popping up now for non-binary people, but they sound very unnatural (and quite rude at first tbh). Once the nb community settles on a common term, instead of trying out several, it'll probably be easier and we'll become more used to it.
gpt
Interesting perspective I hadn’t considered