I remember participating in a food drive when I was in high-school. One of my teachers reminded me that gathering the food was only part of the problem. Transporting is an entirely different problem. I don't know if there is a food shortage on this planet. I do know there is a distribution problem which is part technological and part sociopolitical.
According to what this research suggests, it mitigates shortage or unavailibitity of seeds through greening. It doesn't address the distribution aspect. Countries or regions that are grappling with food shortage could see merit in this method
preserving more of the thrown out food might do more for hunger than killing all the trees for soya