I don't see why salad design is a big deal. You could find that kind of design in any genre and demographic of manga.
I think the reason for the upset is that because in naruto, kishi design is always conservative. That's why there's almost no fanservice from female character. You can call it kishi advantage as a mangaka.
It's because she's 12 years old. Sakura didn't even wear that way when she was 18 +.