It would be pretty straightforward to calculate a TRC and fatality rate for a common class of monohull racing, and then do the same for the AC72s so far, and compare the rates. Then you get a much better picture of how safe/unsafe the AC72s are relative to other boats.
So if we did a TRC on deaths in Formula 1 car racing in the 1950's 60's and 70' and compared it with deaths in ordinary 4 wheeled passenger vehicles over the same period and compared the rates ???
The F1 fraternity would not have been able to make their sport safer because it would have been banned.
General Motors alone over the last 50 years have produced many hundreds of millions of cars so world production must be into several billion if all car makers are counted compared to several thousand F1 cars over the years. (Statistical fact: GM produced its 100 millionth small block V8 about 8 months ago)
In a motoring TV program in the UK (Top Gear), ordinary drivers took ordinary "super cars" (McClaren F1, Lamborghini) around a popular European race track and recorded higher speeds than F1 cars. So the safety measures taken in F1 to reduce deaths has really worked
I am not going to do hours of research to prove this point but I would be willing to bet on the fact that the TRC process outlined would see an immediate end to Formula 1.
On the day that the international community puts yacht racing under the control of OSH, yacht racing world-wide will end because then it will no longer be any fun and that is the primary reason why people do it.
As always, just my opinion(s).