I think seeing morbidly obese people eating is disgusting.
Why do you think it's disgusting?
There is something off with eating too much food for your body type.
You might feel like a better person if you didn't judge people on their outward appearance. And if you don't want to watch people eat, turn your head.
I'm not judging people and it doesn't bother me to see them eat. I just don't like it.
It does sound like you're judging people, which isn't a good thing to do. Try to put yourself in their position and think about their struggles when people judge them this way.