Soylent's main page has a picture of a table beet, (the red vegetable beet).Beet sugar is a white beet from which pure sugar (99.9% sucrose) is extracted. There are no 'beets' as we call them, or that pictured in Soylent. This is a mistake on their part. This type of misunderstanding of ingredient information is common when a third party formulates a food product as is likely the case here.
I can't decide you actually believe that, but I certainly don't