The other problem that doesn't tend to get addressed in this sort of discussion of nutritional-supplements-for-the-poor-masses is that you still need to mix it

The other problem that doesn't tend to get addressed in this sort of discussion of nutritional-supplements-for-the-poor-masses is that you still need to mix it with water. The poorest places have a lot of problems getting water that's safely drinkable and cases of supplement don't really help them (see also the issue of baby formula in the developing world). Honestly, this idea that soylent is a solution to famine strikes me as a bit absurd.