Kim is not being treated like a supermodel because she is not a supermodel. Supermodels are supposed to be long and lean. Kim has a very different body type from the supermodels that we know. She is very curvy and petite.
She can surely grace the covers of some magazines because of her popularity but her popularity does not mean that she is already being considered as a supermodel. She is better known as a very successful businesswoman and she has managed to get the attention of fans from all over the world. She is truly someone famous but she is not supermodel-material. Her popularity as a star and influencer cannot be denied.
I also feel that Kim is not a supermodel. I think that she is a super STAR. These two things are different. A supermodel is someone who is always booked to walk on the ramp and model different clothing, accessories, and whatnot. Kim is too short to become a supermodel but it does not mean that she does not have her own accomplishments.
She is actually well-accomplished in life. Everything she touches turns to gold. People want to see more of her and people just adore her. It does help that Kim looks great all the time especially after she has started dating and eventually wed Kanye West. She started looking classier and that has made her look like a supermodel in the eyes of many.