Well if you are gender fluid then select what you identify as at the moment of filling the spreadsheet.

Or better yet select what your employer sees you as, if you are a 6'3" male with a neckbeared your employer thinks you are a man regardless if you identify yourself as male, female, neither or a walrus.

Identity politics aren't really the point of this exercise.

Surprisingly, this is the first troll I've seen on HN.

After enough downvotes I think the bad posts just disappear from view. I'm not 100% sure how it works.

Please stop posting unsubstantive comments to Hacker News.