Earlier quoted context omitted.
If employees are having trouble saying "no" to unsafe, unethical, or unlawful projects, then a professional association or union is needed. A professional association can create duty requirements external to a company; it's easier to say no to your boss is have the excuse that "as a member of $ORG, I have follow $ETHICS_RULE". Alternatively a union can put pressure companies to never ask for certain things or to meet…
If there is one thing our world does not lack, it's amoral people. Would you prefer that Facebook only hire them?
Day 87; Facebook declares bankruptcy. None of the money can be found. The servers have already been stolen by the surviving employees. Administrators arrive at HQ to find only a few broken chairs and a vast pile of shredded paper.
(to explain the joke, there is a downside to hiring amoral people)