It's bad  writing simply because she's a basic archetype which makes her feel one-not. Yes women like this do exist to a point, but all of them have something more under the surface, we might not always be able to see it but it is there. Things that are unique to them, and differentiate them from another archetypal woman. This is something that we should especially see in a VN with the MC, as we literally get a look into her deep thoughts. 2 good examples of what i mean:
ORS-Cindy- shallow and basic, everything has always been laid out for her, she's pretty, rich, sociable, she's never really had to struggle for anything, and this has given her an empty life. She is totally aware of this, and is often attracted to ppl who have that sense of Passion to do something more, ppl that have found something that is true to themselves, and live life like that.
ORS-Alison- she's somebody who craves validation, even though she's intelligent, and  beautiful she's extremely insecure, so she manufactures every aspect of her life in a way that she thinks it should be. She's actually similar to Gale.
Each of these characters are "basic" but they both still feel different from one another, this adds authenticity to them, and that should be a writers goal. No 2 ppl are ever exactly the same, even if they can appear so.