It's always the same with these things. To me, it's a mix of ignorance and people having too much time on their hands to complain. I remember the controversy that was created with the second Horizon Zero Dawn because Aloy looked "chubby".
For me the real problem with this AC is that the game ends up being a copy of the previous ones, a valhalla but in Japan, or something like that. I hope it's not like that and they really have been encouraged to go further, the Samurai theme can give a lot of play to the combat, they can create something pretty good there, I hope it turns out well.
I feel the exact same with your take on Horizon and with how they should definitely upgrade the gameplay for this installment.