The UN is operating at a different scale doing something quite unique, and the reports don’t need to be widely-read to be important or influential. I ran kitchens at a series of homeless shelters for ten years and the difference between cooking/serving food, and actually procuring supplies and dealing with the supply chain - was the difference between something that took one hour and something that took nine months. It is much like this with the UN and other international trans-governmental organizations, they work with ridiculously complex systems and get real shit done, even if it’s not as visual as handing out a plate of food.