What the once fat person couldn't see if that to prove that not all skinny people are healthy, the single example of the model being unhealthy proves that but to prove that all fat people are unhealthy, you can not just say, "I was unhealthy" and have it even chip away at the burden of evidence.
I wonder if this is a fundemental problem that some people have understanding the world?
Also, why didn't anyone point out that the "plus size" model wasn't overweight at all? This doesn't actual add to the arguement, other than the definition of "fat" needs some work.
Sadly the show was completely dumb.