This is a good place to draw a distinction between body shaming and a destructive eating disorder. Intentional or not, she is using her platform to promote a deadly body image. As an example, young tween girls often comment that they want to look like her. And, unfortunately, trolls will comment that she looks fat.
Geez. This is pretty wild. I understand what you're saying and I also wonder if it's eating disorder or a disability that keeps her at that weight? I have never heard of her until today. It would be very hard for me to watch a video and not feel sad and worried.