Why wouldn't they feel comfortable using it? It is basically rapidly composted food, using high temperature thermophilic bacteria, that die on cooling, thus sterilizing the fertilizer naturally (pasturized). What better organic fertilizer could there be?
Have you looked at their products and the incredible stories of hugely successful field trials on their web site?
The recent high jacking of the word organic by the food industry, is another story. It leans on a public that is poorly educated in the sciences, and has no fundamental understanding of the formal meaning and definition of the word "organic".
Frankly the advertising industry and Hollywood have now eliminated the black and white lines in the meaning of so much english, and turned them all so gray, that no one knows what it really means any more. Makes it a lawyers field day as well.
Long story short, COIN has merged the best of industrial technology with the best of mother nature, to make a process that converts food waste into a compost like "organic" fertilizer, that has all the good parts of compost (organic rich fertilizer) with out the pest problems that come with outdoor compost. And they do it in hours, not months. The controlled indoor environment is the key!
By the way, one of the original directors at COIN is an ex EPA regional director.