This is true, but it is a statement about causality and the thread was about responsibility. Those are two different things. The fact that your actions lead to a certain outcome does not automatically mean that you're morally responsible for this outcome (that's the fallacy that leads to victim blaming, among other things).

It is always engineer's responsibility to clearly explain the trade-offs to the managers. Only a manager who's making the decision with accurate information can be responsible for it.