The standard counter to Soylent criticism though is that it's just an alternative to other quick meals on the go. Personally, I do often make smoothies in the morning and have never had a Soylent so I'm not going to argue against more natural is healthier--even if I'm not going to try to substantiate that general preference scientifically.
But yes. Their broader business plan and certainly what gets the press seems to be Soylent as broader meal replacement. If this were just another "nutritional drink on the go" absolutely no one would care.
"Powerfood" additives, being basically an orthogonal component -- aside, it's basically a powdered (or perhaps pasteurized concentrate, a la Minute Made) remake of the classic, fresh-everything version of your regular breakfast smoothie.
You don't see any issues with that?
The hackles come up when it's promoted or discussed as a broader meal replacement.
Which just so happens to be Soylent's business plan.