I would prefer it if gender was just left out of official documents and policies, and rules would just focus on medical situations. This would leave space for everyone to be who they are while still allowing for specific care for people who menstruate, get pregnant, have a prostate etc.

We don't have separate rules or bathrooms for people who wear glasses or are redheads, but somehow this archaic binary distinction is so ingrained in our society that people feel the need to categorize them in almost every domain of our lives.

I say this as a cis man so if my opinion sounds stupid I am willing to learn. I do have some close trans friends and what I feel is that they just want to be allowed to be themselves. Like, their search and discovery of their identity is of course super important to them, but at the same time they are just people. I discuss them now because of the topic, but in my head they are no different from any other person I know. Just let people be themselves and don't force boxes where they aren't needed.