Under- educated or over- educated, doesn't matter.
I have kept chickens off and on for over 30 years, all manner of breeds, you name it I have had it laying eggs on my place. These are some of the very simple observations I have made regarding chickens and feed.
Chickens will eat anything when they are hungry, you can not starve a hungry chicken if he has food in front of him/her, they will eat any kind, pelleted or mash, cheap or expensive, organic or off the shelf. If they don't eat it, they ain't hungry.
I have feed my chickens the end all be all super healthy feed that cost and arm and a leg, they ate it and layed eggs. I have fed my chickens right off the shelf Purina, Dumor, and a few other local brands, thay ate it and layed me eggs. I have supplemented their feed with whatever I could find, fresh fish, green stuff, high protien, low protien, they ate it all and layed me eggs.
The point I am trying to make, is some of these "cafe" brands of super duper holistic-organic-nonsoy-corn free feeds are more for the satisfying of the owner, rather than the satisfying of the chicken. You have the money and it makes you feel good, go a head and buy it. But in my opinion I have never seen as much as one iota of difference in the condition of my hens when they are fed super duper or off the shelf. The important thing is they get all they want, along with all the fresh water they can drink, stay cool in the summer and warm in the winter.
Just like fishing. You guys and gals know what I am about to say. You go into your loacl sporting goods store, and the shelves are lined with 72 different colors/sizes of the very same fish bait. Well many of those colors/sizes are designed to catch more fishermen, than fish. Now take that same idea and transfer it to chicken feed, we got vegetarian, animal byproducts, holistic, organic, soy free, corn free, how many of these types of feed are to feed the owner's feelings, instead of the chicken?