Her character and character arcs are bad even beyond the sexualization, which also actively harms her character arc, too.So what? Even with those complaints, she still has by the most interesting character story arc in the game, she's one of the few good things about that TPP.
Jumping on the bandwagon of her sexualisation is a rather tired and boring argument.
If she's the best character in mgsv (Miller has a more interesting arc in my opinion) it's only because everyone else is a cardboard cutout in that game.
The worst mgs I've played in that department.