It really depends on how you look at it. One way of looking at it as if the government trying to protect people from charlatans. Another way of looking at it is to believe that the government dont want us to find ways to heal ourselves.
But since when does the government care so much about our well-being ? Have there been any reports of death through use of Miracle-Mineral-Supplement ? I dont think so.. So why would the FDA try and restrict something that has not caused a single death ?
As the healthcare is the biggest revenue maker for the government especially in the times of crisis, it is fair to assume that the government simply acts in the interests of pharma organizations and once again sticks it to the little man.
It is in the interests of your government to keep you as unhealthy and dumb as possible so they can carry on their sinister deeds without anyone trying to expose them or slow them down.