Why does Kubo hate his female characters?
Because Kubo is a dick, he's not exactly subtle about it either.
He knows he can't fuck them
Kubo is a bad writer OP, it's not much of a mystery.
I now have the mental image of Kubo putting different masks on his wife before he fucks her so he can get off.
Don't forget different wigs
It's extra hard when Kubo wants to fuck Halibel. It involves his wife getting a tan, getting fit and letting her hair grow
So where does "The Heart" figure into this?
Cuming all over her chest
Because his target audience are fujoshits.
Because Kishimoto hates women and Kubo wants to be like the Kishimoto