There’s a difference between knowing something that would improve a system and knowing that there are specific flaws with a significant degree of lethality. It should be acceptable to miss someone telling you the first (if perhaps a missed opportunity), but it’s negligent to miss the second. It sounds to me that these people were taken aback and appalled by the cavalier attitude towards safety. If you have a decent number of professionals telling you something is unsafe and you ignore their cries, and then you kill people, you’ve fucked up in a big way.
Edit: more to my original point though, the response should be to improve internal processes to prevent this kind of tragedy again, rather than to throw the people doing the right thing by speaking up under the bus, saying it’s against company culture to call out dangerous risks.
