That's the gutload mentioned in the article.
The original purpose was to gutload insects for chameleons. In case you're not aware of it, chams are very easily affected by poor diet, wrong supplementation, and just about anything else. They don't compromise, either they get what they need, or they pretty much go down hill.
I used only that gutload for years when I had chams. It worked great. Even geckos thrived on crickets raised on the diet, allowing me to drastically cut back on dusting their prey. It's not a perfect diet, but it sure is close. It's actually been around longer than 2008, I believe somewhere around 2000. Google the recipe by name, you'll see it's been around for at least 12-14 years.
As for how it worked out - perfectly. It's not just my experience, but the others in the chameleon group (dedicated keepers). The people who came up with the recipe, Susan James, Don Wells, and Ken Lopez, DVM, are well known for their work with chameleons. Dr. Lopez is the author of the Vitamin D3 and Calcium article in the original post.
It's a bit difficult to get the ingredients, but worth while. I still use it, but alternate with another gutload that's easier to make with ingredients that are readily available.
Monkey chow is often sold as parrot biscuits. The chow is notoriously difficult to grind. I broke a blender trying it the first time. The best was I have found is to put a few biscuits into a plastic bag, smack them with a hammer until they're small chunks, and then try to grind them. Apparently some food processors can managed it, but I use my mom's antique meat grinder. Or you could put the crushed pieces in a fresh bag and drive over it a few times with your car, or truck, as one person did. Apparently that works well too, if the car is heavy enough.