Cameron implies that the system did detect a crack in the hull, giving them at least a few minutes of warning.
Obviously, a few minutes isn't enough, but the point is that the occupants were likely aware something was wrong because of this system, as opposed to being vaporized without having enough time to comprehend their reality.
I only take issue with saying that the system worked. It didn't work, since it was designed to detect failures well in advance which it did not do. Almost only counts in horse shoes and hand grenades.
I wonder if they knew they were doomed or whether Rush was telling them not to worry to the very end. Personally, I think I would have rather been vaporized without the minutes of terror beforehand.
Cameron did not say "the system worked" nor do I agree with summarizing what he did say as "the system worked."
The claim in the blog post was this:
> With this RTM system, we can determine if the hull is compromised well before situations become life-threatening, and safely return to the surface.
It obviously did not do that. The system failed catastrophically.
In the part you elided Cameron said: "I think if that's your idea of safety, then you're doing it wrong."