Just to add, most of the bathroom related ones are other employees complaining, not management. Management has to respond to that. This is because US culture insists on separate gender bathrooms.

In the context of Amazon, though, performance quotas are inhumane, warehouses are huge, bathrooms are sparse, so employees aren't able to use the bathroom without taking performance demerits. So you get people passing out due to dehydration because they don't want to need the bathroom.