If you believe that you can survive consuming nothing but Soylent then that should give you all the confidence you need to use it as a simple quick meal when you're feeling too lazy to cook. The way I think of it is the marketing works in the same way as it does for the advanced technical gore-tex jackets people walk around in when it rains or the 4x4s mums drive their kids to school in. Sure I don't need to take my use of these products to the extreme but it's good to know that I can if I need to.
Of course the article still makes a good point - how can you possibly design a complete meal replacement formula for everyone?
It would be as if someone came up with a new, super-high end car and called it a Yugo. No matter what you do, you could never completely erase the pre-existing market perception even though the new product might be totally different.
In a general sense, meal replacements are great - they let you simplify eating and save money by buying in bulk, and the regulated intake can help if you're trying to lose weight, too. But you better believe the friends of mine who try to lose weight using a completely replacement-based diet are being supervised by a doctor!
If they had of come out and said, its a meal replacement then I think more people would be open to trying it.
However they came out and stated that you will never need to eat again and this can replace all your meals.