Okay. So, right now my thought is that we have encountered two vastly different aspects (proponents?) of the "Fat Acceptance" movement.

That's quite possible. I've never encountered or been part of a movement that didn't have a few very loud idiots. And I'm glad you're not objecting to the existence of the whole movement, which was my original interpretation.

I'm sorry that you've had to deal with (2). That's horrible. One of these days, humans will learn how to accept that people can choose differently from them without seeing that choice as a criticism.