Dyrone said:

Furthermore...what is the use case? Why do we care what something was in lore if what we're actually SEEING is completely different.

Completely different?

Look at OP image. It's a good example of where TWYS gets tricky. There is no decisive information (vagina/penis? breasts?) about the sex of the mouse character within the picture. It has been tagged female because there is more evidence on the female side (facial features), but nobody would look at this and go 'that character is unquestionably female!'

(Just in case it gets brought up again, ambiguous_gender is not applicable; that is only used when there are no gender indicators at all.)

I do agree that people might come unstuck WRT effective use, because lore tags must, in effect, be defined individually by each artist, and can only be functional for searching if those definitions agree sufficiently. Still, these ambiguous cases exist, we might be able to deal more completely with them, and perhaps we should try to.