I find it strange, or telling, that while the claim makes much of PADI having set what it states are “reckless” instructor-to-customer ratios and on the 40’ limit allegedly being much more dangerous than 30’, it does not seems to go on to argue or demonstrate that either of these things was a factor in the decedent’s death.
All the claim says on the actual death is that the decedent was with two other non-divers and one instructor, and he descended so that he was below the level where he could put his head above water, then ascended and suffered a fatal embolism.
There are also statements that the cove in which the fatality occurred was unsuitable for DSD, but again the claim does not actually attempt to show that these were relevant to the death.
I read the claim quickly and before my morning coffee, so maybe I missed it, but the absence of a chain of causation seems significant.