Fortified just means that something has been added to the food, usually because it's supposed to be good for you. It's true this is often done when the processing of the food has removed naturally present nutrients. And sometimes it's done to give a sense of security that you're getting your "12 vitamins and iron" in your cereal, even though the many other nutrients present in less-processed foods are not found in the cereal.
But it's also done for other reasons. For example, soy or rice milks are sometimes fortified with calcium because many people drink them instead of cow's milk, which contains calcium naturally. Since many people don't absorb the calcium in cow's milk very well, this is a case where the fortified food might actually be better for you.
But it's also done for other reasons. For example, soy or rice milks are sometimes fortified with calcium because many people drink them instead of cow's milk, which contains calcium naturally. Since many people don't absorb the calcium in cow's milk very well, this is a case where the fortified food might actually be better for you.