You seem to think this is about winning. There is no winning for anyone here. This is more of a discussion in my view. The winning is what takes place in the courtroom.
You can say the deaths from dive training are insignificant. I wouldn't say that to the friends and family of the deceased. However, that doesn't mean that changes to the system cannot be made to make the number of deaths even more "insignificant."
And if you think this is my Quixotic quest against PADI, you are wrong. Some PADI folks come to that conclusion when their identity is so close to their agency, something I will never understand. For me, it is about the industry reforming, taking any situation into how can we improve? As we can improve.
I will go back and look at DAN reports to see if they cover the deaths for which I'm aware. It is my understanding (I am not claiming this as fact) but DAN tosses out incidents that they don't have all the information. DAN is not an authority to overrule privacy laws, so my guess is that negligence training deaths would be underrepresented.