But does your skirt spin up or spin down? What's the emission line of your skirt's spin transition?
or is this Coriolis-brand skirt lying to me
Coriolis-brand skirts are lying to you. They just look like they're spinning differently because we're on a spinning frame of reference.
Take a trans girl into space and the skirt will still go spinny. Gender euphoria is universal, and therefore skirt spin is independent of frame of reference.