They use precise but indirect terminology e.g., "heightened level of appearance self-esteem" rather than "confident in their appearance".
Indirect phrasing e.g., "they respond more favorably to products that can help to repair their damaged appearance self-esteem" rather than something direct and easy to understand like "they feel bad that they don't fit, so they end up buying other things like makeup/jewelry to feel better about their appearance".
Maybe it's me, but only the first quote seems cumbersome, and wasn't very cumbersome in the article when I read it in context.
You can't write "feel bad that they don't fit" in a paper. What do you think this is, the yellow papers?