People will do anything to become famous. There was nothing of value to see though the lone 12” porthole in the sardine can in dark murky water. They went down there to have the badge of “adventurer.”
Exactly the same motivation that causes these great men to march up Mt. Everest and dozens of other “accomplishments”.
For my part, I applaud their demise at least to the extent that this discourages other “great men” to risk theirs and others lives and property for nothing more than the trophy.
That was going to be their only view?
They also apparently had monitors on board that would show images from the cameras mounted outside but how is that different than viewing the same images from the comfort of the ship on top of the water or even a land-based location?
Also, consider that these five had to sit cross-legged jowl-to-jowl with each other for the entire journey. They had virtually no space in there to move about. So to take a turn at the one porthole, they would have to literally climb over each other in a space so tiny you couldn't even stand up. I get claustrophobic just thinking about it.
The passengers also had to go on a special diet before the trip to bind themselves up inside, so that they would not need to have a bowel movement during the journey. I suppose they were all wearing adult diapers (for any urine discharge) but a bowel movement would have stunk that tiny space up for sure. I can't even imagine.
Well, in the case of the Titan implosion, no Sherpas lost their lives.