[amanaplanacanal]

In American culture being fat is seen as a moral failing. Calling people out who already know they are overweight is offensive. You aren’t telling them something they don’t know. Likely they have already tried to lose weight and failed.

[darkerside]

What's wrong with calling people out for a moral failing? It's more polite to ignore and pretend it hasn't happened, but it's a bit insane too, isn't it?