And yet, firearms accident rates have steadily declined, even with those "riskier" mechanisms.
https://www.thetruthaboutguns.com/fatal-firearms-accident-rate-reaches-record-low/ Makes you wonder if perhaps they're not actually "riskier" at all.
This was in response to Slamfire's post about "normalization of deviance." This topic of firearm safety is of interest to me. The simplicity and safety of the double-action revolver's manual of arms is one of the reasons I chose it.
I think it's fair to say the single-action automatic is not safe to carry loaded without some kind of safety mechanism. There's over a hundred years of debate about empty-chamber, loaded-chamber, half-cock, grip safety, cocked-and-locked and the manual of arms to manipulate these things. I think condition 1 is prevailing in the present day. The man in the OP's story was not practicing this and was unprepared. There's many other examples of an unloaded chamber failing someone. On the other hand, carrying cock-and-locked has its own set of demands that must be met and can and have been failed. The ease of learning the consistent and light single-action trigger is said to be one advantage.
The invention of the DA/SA automatic's mechanism was no doubt an attempt to alleviate some of the demands of the SA automatic's manual of arms. Carrying a loaded but uncocked pistol that can be fired with a double-action trigger does alleviate the demand to manipulate a safety -- at least until the pistol has been fired or the slide racked to cock the hammer. Then we need to either engage a safety or decock it and failing to do so could result in holstering a gun in an unsafe condition. The inconsistency of the DA/SA trigger is sometimes cited as a disadvantage.
The striker-fired action provides a single type of trigger actuation, is often offered with no manual safety to manipulate, and yet the design of the trigger pull seems to have been getting progressively shorter and lighter. It's now common for factory triggers to be lighter than the original 1911 single-action triggers. I think it's fair to say that most of them are around 5 pounds, but some have been produced at less than 4 pounds. As far as I can tell, the main difference is the striker pistol's additional trigger pull length. I am not personally alarmed at this. I just don't think I understand it. I know that some police departments are apparently concerned with it and they add 3 to 5 pounds of trigger weight to their issue guns. Are the factory triggers unsafe or are these just the knee-jerk reactions of liberal-run big-city bureaucracies? It seems to me that if the factory triggers were exceptionally dangerous, we would see the results trending. While bearcreek's citation concerning fatal accidents doesn't address all the possible incidents of unintentional discharge, I still haven't seen evidence of a a major problem with unintended discharges as these pistols have undergone widespread adoption over the last few decades. Is the problem being hidden or masked or does it just not exist? Like I wrote, I just don't understand it myself.
The double-action only manual of arms provides a safe condition of carry even with less than perfect holster and cover garment conditions, and a consistent trigger actuation. In the case of the revolver, it also forgoes the need to rack slides against heavy springs or perform non-diagnostic linear malfunction drills (tap-racks and other jam clearances that require magazine extraction). The challenge of it is the demand for long, heavy double-action trigger control. The OP cites a case story where a man disabled by an injury wasn't able to rack a slide, but I can imagine an injury that prevents a person from pulling a heavy double action trigger -- especially those j frames. My wife can't pull a j-frame trigger even without an injury. I've suffered hand injuries (dog bites) that left me temporarily (for about 15 minutes) with no grasp strength in my fingers. I doubt I could have pulled a double-action trigger, and I couldn't have racked a slide with my hands, but possibly by another means like my leg or against an object like a doorframe.
I recognized the demand from the revolver to learn good double-action trigger control and determined to meet that. I think after a few years of training and practice that I've demonstrated by objective criteria evaluated by independent experts that I've done that. What I'm trying to say is that I'm competent with a double-action trigger and that I've not just convinced myself of this, but demonstrated it to trainers and against competition that could tell me if I had just convinced myself against all objective evidence. I think it involves a certain amount of ability or talent. For example, I don't think my wife could ever attain the competence with a double-action trigger that I have. With a lot of training she could get better than she is now, but it's just not for her. In a similar way, carrying a striker-action pistol is just not for me. I'm sure with the right holster, due vigilance, and training, I could safely carry a single-action cocked-and-locked but it doesn't play to my advantages. I don't have a handicap with trigger control and the tradeoffs to get a short, light trigger aren't worth it to me. If I had a different set of abilities and training in technique wasn't getting the result I wanted, I would look at other action types, strikers, single actions, da/sa, EZ, and finding one that worked for me and learn the needed manual of arms.