I understand that's the case as well. A lot of low-carb diets, such at Atkins, allow you to eat as much fat as you want and you'll still lose weight. Dietary fat is bad for your cardiovascular system, though.

The food that contains 0% fat doesn't contain any fat. That's actually useful information. If people think that 0% fat foods are automatically good for them, that's an education problem not a labeling problem.