They're "being happy with who they are" or that same schlock that lead to the acceptance of Upton as a "model". Ewww. There's a difference between accepting yourself and letting yourself go to sh**.
Not everyone has gorgeous bone structure or symmetric features or astonishing height, BUT no one without those is just genetically destined to eat burgers and ice cream daily. That's a choice. (that no self-respecting person should make!) Appearance isn't everything, but it's damn important if you need to get a foot in the door or be taken seriously.
I sometimes struggle with thinking I'm being catty/snarky by thinking this about others, but I've realized... if it's someone I know and care about, these things they need to hear - they need to take care of themselves. When it's a stranger, maybe they don't need to -hear- it from me, but my thinking it isn't suddenly inappropriate. Sorry - argument with a friend over this.