TIL genderfluid can also mean “female from the waist up, male from the waist down”

Or vice versa, etc. with some caveats (see below). As per the Wikipedia article on gender fluidity:

A genderfluid person may fluctuate among different gender expressions over their lifetime, or express multiple aspects of various gender markers simultaneously.

As I understand it, these gender markers might not be the same as sexual characteristics. For example, a person with feminine clothing and a penis could be a trans woman or femboy depending on what traits they consider defining of their gender, and might be intersex or not. Not to mention non-committal states like gender questioning and exploration, or crossdressing for entertainment or a Gerudo Town visit. They can find terms like "nonbinary" and "genderfluid" derogatory, especially if they encompass a trait they are indifferent to, dysphoric or sensitive about.

Am I wrong about something here?