I think that you are making a good point, and an even better historical analogy is the
Coconaut Grove fire, in terms of longstanding impact on regulations. 492 dead. Read about it.
A lot of the building codes we have today come in some way from that, like egress doors and exit markings. Not to mention big advances in the medical and surgical management of burn injuries...
"Other avenues of escape were similarly useless; side doors had been bolted shut to prevent people from leaving without paying. A plate glass window, which could have been smashed for escape, was boarded up and unusable as an emergency exit. Other unlocked doors, like the ones in the Broadway Lounge, opened inwards, rendering them useless against the crush of people trying to escape. Fire officials would later testify that had the doors swung outwards, at least 300 lives could have been spared."
I know that we tend to get defensive in the wake of a tragedy like this, especially if we have had good experiences with the dive op before. I'm not ready to place blame yet, and we obviously don't have all of the information. But I would certainly be interested in hearing what more experienced mariners have to say about that bunk room layout. Just like dive accident analysis, this is how we learn, this is how we do better.