I'm thinking of taking the stance that Danbooru has with human-with-animal-ears gender-specific tags like catboy and catgirl and sorting them by the type of ears they have, which is not gender-specific. Tags should not be gender-specific, unless they are gender tags. Both catgirls and catboys have cat ears, so they should both be aliased to cat_ears, because having cat_ears and gender as well as catboy/girl is redundant. Gender-specific tags like catboy and catgirl should not have been used in the first place, really. We don't use the "ess" suffix to denote a female, like in dragoness or lioness. We use female.
So... y/n?
Updated