This, of course, is his perfect right. When you are an old hippie turned multi-millionaire, you often decide that libertarianism is just peachy keen. Nolan Bushnell, the old reprobate that started Atari with other people's money and other people's talent, thought free love, legalized pot and tax cuts on the highest income levels were the best things in life.
Mr. Mackey thinks the real way to improve America's health is eating naturally grown foods that are lower in fat. The kind you can buy at Whole Foods Market, provided you can get a second mortgage on your home, and good luck with that in this housing market.
He can say what he wants. You can buy where you want. I recommend you buy your healthy produce at other stores or at farmer's markets or anywhere that doesn't put cash into the pocket of the Ayn Rand loving grease weasel.