The trouble is not the decision to optimize for financial or physical health, the issue is that Amazon seems to see some people as part of its organism (long-term entity), such as its engineering talent, and other people, like these poor warehouse workers, as a temporary part of a future robotic optimization. Companies like Apple value their lowest level employees because nobody is sure that computers will competently replicate sympathetic customer service. Amazon doesn't need its warehouse workers' soft skills, only their muscle and basic logic.