That feels more like retarded favoritism. Outside of Orihime(whose issue was more how Kubo seemed stuck on how he wanted to use her powers vs. her characterization), the other females of Bleach was definitely on the better side of shonen. Even with what happened with Unohana, how she basically eviscerates Kenpachi when she finally fights for 3 days straight is just hilarious. One Piece is better about this outside of Robin barely getting any real meaningful battles for the longest. And even now, I can find some decent main females without even trying.