I think it might be instructive here to think about how notions of what kind of "build quality" and materials are best might tend to differ between:

a) a jewel-like, highly refined computer that you hold in your hand and touch gently to use

b) an industrial cleaning device designed to be banged into objects on a regular basis, scrub surfaces aggressively, and suck up dusty dirty things, without damaging what you bang it into