Exactly. Sex relates to the physical reproductive organs. Gender is a psychological/sociological construct. There are only about 3 sexes, and an infinite faerie dust cloud of genders, since gender is subjectively defined by an individual's perception of their own being. Like describing what the color purple tastes like, it's going to vary from person to person.

Also, this makes me extremely pissed off about the restroom debate. It's really sex vs gender and personal freedom vs social responsibility. If the little girl on the door represents gender, then as a public facility it represents the public perception of that gender, which means that only passable trans women should be allowed. If it represents sex, then that's super easy, since they only have to remember whether they had something chopped off/put on to know. From the public reaction, it's definitely the first one, in which case the argument isn't about sex vs gender, it's the other part about personal freedom vs social responsibility. That is the argument that they should be having, give up personal freedom to conform and use the restroom associated with the gender they most closely resemble, or fuck the world and little Sally's eyes, who was too young to process what pre-op means, and embrace freedom of choice to pick the destination. And if you really think about that, don't we already enforce the first option with the existence of separate restrooms? Really makes you hmmm 🤔