What they actually discovered is that not chewing is bad for mice.

In fact, not even that, they discovered that something bad might be tied to not chewing. They didn't test Soylent, they tested some powdered food vs pellet food.

Soylent should start delivering their packs with some chewing gum, just to make fun of these morons (the article's authors, not the scientists).

If you want to chew your nutritionally complete food try mealsquares.