First off ingredients on labels are listed in order of most prevalent to least.
So what stands out specifically is the unhealthy oils. Sunflower and canola. I'm mobile or I would paste links, but read up on them. Horrible omega ratios, and sketchy by-products are usually found in them (hopefully Soylent at least has quality versions of this).
Also maltodextrin is always one of the main ingredients. Super high gi, and no nutritional value.