Soylent solves no such problems that haven't already been "solved" by existing, better-formulated temporary meal replacements already used by organisations such as Medicin sans Frontier when it is medically sensible to do so.

Logistics are not the cause of starvation. Local poverty is. Selling a bloody expensive powder doesn't seem to be the magic ticket here.

If you're hiking significant distances carrying light, dry trail mix is much better than carrying heavy liquid Soylent.

You're not supposed to carry it as a liquid; in fact, I believe it doesn't keep well.