I agree with this completely. I'm not fat and never have been, so it's hard to put myself in their shoes. But it must really take a psychological toll to be subject to packs of howling monkeys constantly throwing shit at you. (This doesn't literally happen to fat people; it is a manner of speaking.) Probably the most pressing reason they have to lose weight is to make the monkeys stop throwing shit. But pleasing a bunch of shit-throwing monkeys is a horrible way to motivate yourself. And so they end up defending themselves, saying in effect "f**k you, shit-throwing monkeys, I'm fat and I'm proud of it." It's certainly a problematic choice, but I think I can understand it.