In the case of offices, the receptionist is the most important and powerful person there. They are the ones who have the ear of everybody else, have control of access to everyone else, know how things really work (as opposed to how everyone says they work), etc.
A good or bad word from the receptionist can literally make or break business deals.
And I know personally that my experience working in a small-business warehouse back when I was young was absolutely garbage. Smaller businesses rarely get any news coverage, but I worked in a warehouse with zero ventilation, no safety training, no safety equipment, nobody trained in logistics, broken and improper lifting equipment, etc. This is par for the course at a workplace with zero outside scrutiny.
Amazon warehouses are at least run by professionals in logistics, have proper safety procedures, equipment, training, etc. As I understand, the 'bad' part is the volume. But at the end of the day, even a well-run warehouse job is a warehouse job. It is physical work.
Bezos would do one day a year operating the customer service lines.
Similar situation where they would send everyone in the company to work in the store, so you would actually use the system you've developed in the real world and understand why everyone always hates the software.