But saying “no, they’ll just be jobless and hire an engineer who’ll rubber stamp it” feels like a cop out to me. Why couldn’t you also extend that further? “no, the board/shareholders will just hire a CEO who prioritizes schedule and profit” fits in the same domain, and nobody is clamoring to hold shareholders accountable.
My personal opinion is that there are a few professions (doctor, lawyer, engineer) who have ethical duties to the public, irrespective of the consequences to their personal career. That’s a legal duty, as opposed to a personal duty to your family.
The question is about who has an ethical duty to the public and how to hold them accountable as such. I’m not sure why it applies only to one group when there’s a reasonable precedent that engineers also have an ethical duty to the public.
* If you work for a public company, you've almost certainly had a training about its ethics hotline with information about your protection from retaliation.