No, Charlie, what you should be taking away is that the margin for error gets smaller and smaller as the depth gets deeper, and the resources you have to deal with issues get more and more meager.
Inadequate decompression killed Opal and seriously injured her companion -- but why did they do inadequate decompression, and how did they end up needing it in the first place? The answer to the latter was impairment due to narcosis, and the answer to the former was that they didn't have enough gas for what they ended up needing to do. You can cope with many, many things underwater, if you have the gas supply to do so -- but the deeper you go, the bigger your supply has to be, and it's compounded by the implacable ticking away of the decompression clock, too.
In the classes I've taken, we were originally taught to allow one minute to recognize and resolve an emergency on the bottom, after which we would begin our direct ascent. In practice, NOBODY gets the job done in a minute. At 7 ATA (200 feet) with an average SAC rate of .7, you're using almost FIVE cubic feet of gas per minute -- take three or four minutes to resolve an issue, and you have used almost a third of your aluminum 80 tank right there. The point we are all trying to make is that you're cutting it very thin, and the deeper the dive, the thinner the margins. When you add narcosis, slow reaction times and confusion to the mix, it seems awfully likely that ANY mishap will end up with somebody out of gas. Out of gas, out of time, out of options.