I loved this piece so much. I too think that being fat is one of the last bastions of acceptable prejudice. And it goes deep and wide. And people can now cover it up by saying they are worried about your health.
The thing that is really striking is that I see it with therapists too!!! I recently wrote an article about a conferene I was out years ago where therapists were essentially bullying fat people and I didnt' have the guts to stand up and respond. I didn't have the guts because I was fat and too ashamed. It still haunts me.
Anyhow, thank you. And good luck!