Yea same. My last few characters have been some sort of gender fluid. My current one I put demiboy. But for the one before I put "what is gender?" As my gender and made it a whole thing about how they were a half elf who was lost/abandoned and raised in the mountains by all kinds of creatures and shapeless/genderless things and gender had never been a thing they considered or needed with their people.

And furthermore, since it was a human social construct that they didn't need to use until they entered more general society with more humans and they were skeptical of it because they were skeptical of human ideas. In general they are skeptical/suspicious of humanoids because the first time they really encountered humans was when a group of humanoids came into their mountains, killed a bunch of their people including their mentor/father figure and caused them to leave and "integrate" into general society to survive, and now they are stuck with all these weird concepts like money, property, and gender.