The article itself is mostly a headline. The majority of the real estate within the piece is dedicated to the box's design, and then how it tastes like a fortified cookie. The company doesn't actually make any claims about meal replacement, but writes in the Q&A:
Can I get all my daily nutrition just from Calorie Mate?
"We do not recommend trying to get an entire day’s nutrition just from Calorie Mate. Regularly eating nutritionally balanced meals is the foundation of a daily diet. Calorie Mate is a nutritionally adjusted food product that contains the five major nutrients, but it is intended only as a dietary supplement".
Along with this, using margarine as a source of calories makes the product unhealthy because of the trans fats.