Lomshek, given that people have managed to shoot themselves with DAO revolvers while holstering, either via the trigger snagging as happened with Glocks on poorly designed Fobus holsters, or because their finger was still inside the trigger guard while inserting the gun, I am not inclined to believe outright that any of the events necessarily would have been prevented, or not. Ayoob simply does not provide enough information and in many of the cases, as I recall a couple were "observers in court" who passed on their opinions to Ayoob that the NDs would not have occurred.
I really liked Handy's description that if you stumbled and shot somebody with a 1911, you would go to court, but if you stumbled and the heavy trigger prevented you from shooting somebody, you would not go to court. That is a very convenient argument and I can offer a similarly convenient argument that is contrary and equally valid. If you stumbled with your heavy trigger DAO gun without a safety and shot somebody, you would go to court. If you stumbled with your 1911 with the safety that you had engaged or did not have engaged but had your finger off the trigger, then you would not go to court.
You can argue all you want about what you think Ayoob's point was. That is speculative and we are equally hindered by only having the information he provided and what I found was that the information he provided was hugely lacking and in error.
I did like the comment that maybe the editor changed some of his statements or titles. That is also a convenient argument and I have heard it before on Ayoob's other magazine articles. Strangely, the editors supposedly may be changing and sensationalizing his words on a regular basis and yet he keeps writing for the rags and there are never any corrections or comments by Ayoob stating the editor-induced mistakes.
As noted by Lomshek, one of the points that comes up is training and proper use of the guns involved. The article could just have well been written that it is necessary to have proper gun training and gun handling skills and here are several examples where people really did or could have screwed up.
I noticed that Ayoob conveniently left out the female officer ND in Las Vegas sometime back where her partner was trying to handcuff the suspect on the ground and she was "covering" (them both, it seems) with her gun when it discharged, missing both. The gun was apparently a Beretta 92 fired in double action. Regardless of what Ayoob claims, you can screw up on either side of the action type and under stress and with adrenaline going, a 5 or 8 pound trigger is almost inconsequential. This officer seemed to be the poster child for this.
Here is the link via packing.org
http://www.packing.org/news/article.jsp/8980