It seems apparent the Creator machine was designed with form over function in mind, to be seen and photographed and to visually communicate the concept of "automated food assembly" while looking aesthetically appealing.

...and likely easier to maintain/modify/extend too, since everything will be electromechanical and not controlled by a black-box computer.

Actually, exactly the opposite is more likely. All else being equal, the electromechanical assemblies are more likely to fail and are harder to change than the computer.