I'm pretty sure what he was trying to say is that, as bad as Amazon's warehouses may be, his experience was worse, and, perhaps, that back in the day, warehouse

I'm pretty sure what he was trying to say is that, as bad as Amazon's warehouses may be, his experience was worse, and, perhaps, that back in the day, warehouses were worse. What conclusion you or the OP choose to draw from that is a different question.