Since Amazon easily hires and retains people at these wages, there very likely isn't anything wrong with these jobs. At least not compared to similar jobs for the same segment of the work force. What I think is really going on here is that Amazon has a PR vulnerability that can be exploited. With enough videos and testimony produced contrasting the plight of the poor oppressed workers with their boss, The World's Ric…
When you employ hundreds of thousands of people, it’s not hard to find hundreds who are incredibly unhappy. Sure, this only represents 0.1% of their workforce, but news agencies don’t care about that. People just want something to be angry about. They’ll continue to ignore that $15/hour is within “living wage” for the low CoL areas that Amazon fulfillment warehouses are located in.
When you employ hundreds of thousands of people, it's not hard to use divide-and-conquer against them, to get them to act against their common interests.
Most of them are not in any position to push back on your demands, even if they'd all be better off from having the freedom to be able to step away from their 'highly important job' to have a piss in peace, without threat of termination.