It's not gender so much as personalities and a bit of bad luck. The loudest, most obnoxious people happened to be female: Pauline, Toya, Biannca, and Helen would have gone if we could have voted for her. The people who went because they were victims of twists usually happened to be female: Jale and Danielle - Marlon and Steven would undoubtedly have gone in their place if it wasn't for the twists. The walker happened to be female (Kimberly). The person who had no business being there in the first place happened to be female (Zoe).
I know people want to invent a gender conspiracy, but there really isn't one, except that they cast too many identikit obnoxious females and have dumb twists that spoil the natural eviction order.