Not that I think Soylent is a good idea, but a nutritionist is not a well defined profession or qualification in the way the a medical doctor is.
So if the people involved in this project consider themselves qualified in the field of nutrition, I don't see how that makes them different to anyone else speaking or giving advice on the subject.
A big organization with lots of money doesn't automatically make a group of people a legitimate authority on anything. After all, you can get all sorts of qualifications in things that are clearly quackery, e.g. homeopathy.
That's false a dietitian has several requirements and while less than a doctor it's on par with a RN. Initial collage level education + test + continuing education credits. http://www.eatright.org/Public/content.aspx?id=6442472286
So if the people involved in this project consider themselves qualified in the field of nutrition, I don't see how that makes them different to anyone else speaking or giving advice on the subject.
A big organization with lots of money doesn't automatically make a group of people a legitimate authority on anything. After all, you can get all sorts of qualifications in things that are clearly quackery, e.g. homeopathy.