I don't disagree with most of your points, but at the same time I don't see why there's any reason this law should not exist; it's easy to implement and does help some people. This law is not the health care solution; it's one tiny part of it.
I think that the article is arguing that since this law will not have a major impact on Americans' health, it should not be implemented. I'm arguing that it's a good law because it makes sense to provide basic information on food, and it's not an unreasonable hassle to do so.