If these shapes in the exercise are not deforming, why are we using an armature to animate these shapes ?
In the section about Objects vs Armatures, it was told to use armatures when we need to animate deformation of meshes or when animating camera rigs. So then why was this rig created for the exercise ?
Forgive me, but I am not complaining. Recreating the rig from scratch alone was a great learning experience.