Tragic, indeed.
However, I submit that when one carries, part of your responsibility is to consider what activities ought not be engaged in in the first place.
For example, we already know that one aspect of carrying is to be observant and avoid potential confrontations which have the possibility of violence in the first place.
The same philosophy should be applied with other activities.
There are a whole lot of other mitigating or compounding issues, too. Was a holster used or not? If so, what kind of holster was it? What kind of pistol was it? Did it have a manual safety of some kind, or not? How about the condition of the firearm? If you need to remove the firearm, can you do so with the pistol remaining in it's holster (safest method), or do you have to unholster it? Where was the pistol carried on the person's body?
I carry all the time. However, I wouldn't carry for certain activities. I wouldn't, for example, carry if I were engaging in certain sporting activities...like football, for example. I would not carry if I were engaging in wrestling activities (either sporting or play), because wrestling involves a lot of clinging and grappling. I would not carry if I were sparring with my brother in martial arts.
Carrying requires us to THINK about the potential consequences of our actions...or lack thereof.