That is fucked up! I think people definitely have trouble in academia when colleagues or classmates critique something that they happen to do, and they definitely do take it personally. I agree with what you said, about not micromanaging people, but at the same time they are contributing to multi-billion dollar industry that makes up that system we need to critique.

However, I agree with you in that controlling other people isn't the best way to go about doing your work in the world. I also agree with what love_street said regarding anger as being a part of acceptance (and gaining consciousness, in my opinion).

I also think people should "examine the forest" as you said, and think of all the different discussions that are happening about fatness. They should value your work, and hopefully will someday see where you're coming from.