Good job, you just found out the difference between sex and gender.

Also, the genitals are not the only thing that defines your sex. And definitely not your gender, since it’s a different concept that doesn’t relate to your biological state.

That’s not getting out of hands, people with this kind of mindset are the ones making a fuss about it. Just let people do what they want, unless you’re an expert in the field that actually does research, you don’t know what you’re talking about, as am I. I just default to this position because it doesn’t have any effect on me or anyone for that matter, and it makes those concerned feel accepted. Easy.

As for the wiki, we don’t know Nanachi’s sex nor gender. Afaic, I believe they’re a she, but we can’t tell for sure, just headcannon.