Anything to do with? Just a shot. They love them some dieting, don't they? No matter what they tell you, dieting feels very feminist. There's all sorts of stuff about how they wish it was compatible with their feminism. Or they could ignore weight or some such.
But that's really not the point. Why are they embarrassed to wish to lose weight in the first place? Why not just say, we want to lose it, but dieting is shit, women deserve better? Then they could stop trying to blame fat acceptance/fat feminism for trying to judge them for wishing to be slim.
Now being slim. That's another thing that's really feminist isn't it?
"Fat hairy lesbian" was more upsetting than I realized.