I had a feeling they just didn't have time to add both of the missing genders, coming from how much they've talked about how they always have problems with time when developing content. And why they didn't just add only one race and include both genders, probably for variety? Both Viera and a beast-like race were highly requested and they hit two birds with one stone in a way, but both are half dead lol

There's still hopes they'll add the missing genders in the near future, and I think the dev team should've clarified that sooner, and the playerbase shouldn't have gone ape about it either.