Engineers speaking out about safety issues that then get swept under the carpet must be amongst the most frustrated people in the world. First you go to school for many years to learn how to do the very best job you can and then some pencil pusher annuls all that by refusing your input because it affects the bottom line in a negative way.
Kudos to this man, I'd hire him in a heartbeat if I was in a position to do so. He's even more courageous than it might seem at first glance because in the society he's from this is an absolute taboo to the point where airplanes have crashed because people did not dare to disagree with someone senior in rank.