Designers = engineers. The faults lie soley with them EVEN IF they were pressured to cut costs by the owners or politicians.

Canuck engineers wear an iron ring for a reason. That ring can be taken away if they mess up and not only even if they would have had to quit their job because of the "owners or politicians" but also for not fighting against a wrong after they quit their jobs. Here, it is an engineer's duty to uphold the safety of the public. That is not to say any other engineers are less loyal to public safety. Just to say that here, it is enforced under law by the engineers.