she is pretty, has big boobs and has just a little bit of extra fat that can easily disappear in a couple of weeks; if she was ugly, had small boobs and obese then her video would actually make sense and be honest, so it's just an easy little marketing PR communication stunt to get media attention and more followers.
Her video makes sense and is honest. Ugly obese women (your words) are not the only people with something to say. Also, it would take more than a couple of weeks for her to get lean, probably several months of reduced caloric intake and lots of strenuous aerobic exercise. But she looks fiine just the way she is.