If that's about the nutritional content of Soylent specifically, I misunderstood and agree with you, pending further evidence, because I want something I can be sure is healthy. Since that's precisely the same thing the G^nP you originally responded to said, I hope you can understand why I thought your critique was intended to engage with the concept of meal replacement in general.
But if that is the case, the reason I'm having trouble with your metaphor is I don't see how it doesn't make it abundantly clear to you that what we're arguing about is just a difference of taste between us.