I get it, Soylent is targeting the "100X engineer" crowd who are supposed to be unflappably dedicated near-godlike ubermenschen. I get that people need to telegraph "how busy" they are by constantly talking about it to everyone with ears. I understand that people need to communicate high-value to each other, and do this by referencing how much responsibility they're given professionally or otherwise-- but long before the point of people eating nutrient paste instead of real food, this busyness fetish has gone too far. You don't need to be eating nutrient paste to convince me that you are important at your job and also good at it-- these concepts have nothing to do with each other, and the usage of Soylent as a prop for the persona of "being hardcore" is simply puerile.
Nobody in the real world is so "busy" that they can't stop what they are doing for a few minutes and prepare and consume real food in order to meet their body's demands. Even special forces soldiers on combat missions in enemy territory carry food that needs to be quickly prepared, which they can then scarf down. Relatedly, quality food is a big boon for morale-- and Soylent sure aint.
I guess if you're a meta-human weirdo who claims to have no inherent desire to consume tasty food and just wants to "get it out of the way", Soylent is for you. I don't believe you actually exist, though. I guess it's possible some brain pathology could cause a lack of desire for food, but come on, go to a doctor instead of eating Soylent.
As a parting shot, I'll mention that Soylent probably doesn't have any kind of phytonutrients or anything similar. Soylent also doesn't have any of the numerous pharmacologically active ingredients of common food items-- the effects of not having these may be subtle, but noticeable over time. Look, just go to your local farm stand, and buy some fucking fruits and vegetables. Most of them can even be eaten raw if you're gonna be a jerk about "not being able to cook" or not having enough time.