To encourage healthful eating, Chicago school doesn't allow kids to bring lunches or certain snacks from home

I read http://www.boortz.com/weblogs/nealz-nuze/2011/apr/12/nanny-state-alert/ Neal Boortz’s take on this yesterday-
There are two messages at work here. One is that parents have to come to the understand that parents don’t know nearly as much about how to raise their children as the government does. The second message is delivered to the children .. and that message is that now is as good a time as any for you to learn that the government is going to be involved in virtually every aspect of your life – even down to what you are allowed to eat for lunch.
Do you think his assessment is accurate?