Amazon designed its warehouses from the very beginning to have it workers be completely replaceable. By not letting them make any decisions, instead just mindle

Amazon designed its warehouses from the very beginning to have it workers be completely replaceable. By not letting them make any decisions, instead just mindlessly doing what the computer says, they can easily plug and play new hires with minimal training. The end goal is pretty obviously to not have any warehouse workers, and making their jobs as simple and repetitive as possible probably makes them easier to automate.