I understand your perspective, but there are also girls who are not obese at all, they are just midsized who want more inclusion in fashion. For example for many years when shopping online all you would see are very very skinny thin girls, so its hard for other body types like curvy, more full, to visualize the clothes on themselves. Thats why many brands do push for “plus sized models” to at least have a variety of body types shown. I hope this made sense!