Regarding your first example, it is a machine that makes bread (I guess in various shapes) out of dough, but if you have the dough, a regular bread machine would be more efficient, and a regular oven would be even more efficient as long as you have a human available to kneed the dough. And many kinds of ovens work without electricity.
Regarding the second example, it is a machine that makes shaped chocolates, which will be poorly tempered compared to molded chocolates, and once again, you have to have the chocolate as an input. Setting aside for a moment the question of weather chocolate is an appropriate thing to spend disaster resources on; if you are in a disaster area, who cares if the chocolate candies are shaped like turtles? I know this is just an example, and your argument is intended to imply that the state of the art of 3D printed food is constantly advancing, it still faces the fundamental limitation that you have to have the food already, there is no forthcoming breakthrough that will synthesize food from constituent chemical elements. You know, other than regular old agriculture.