You could do this but you miss out on the infinite combinations of flavors you can taste by eating real food. Besides, how can you trust these guys? Corruption is everywhere.
Doubt it. although possible these guys are young college kids and are extremely transparent about their business. they show exactly what they use and where they buy it from and everything
Obviously this shouldnt replace food because it can actually effect(or affect??) your social life but it would be handy if you needed to grab something really quick on the go or if you come home and are too lazy to make dinner.
Also they could possibly put supplies of Soylent in emergency kits for soldiers or even civilian use