Almost right. Printers and scanners were not built by people. They are an independent life form that just happens to emulate office equipment for their own benefit. They have enabled parasitic entities such as Canon and HP to thrive alongside them, but since there is no ‘design’ involved, they will never really develop the same kind of interfaces we expect from modern UX labs.

It’s also the reason any sane person keeps a loaded gun nearby whenever interacting with them, just in case they make any unusual noises.