Articles like this one are dangerous and reckless, not giving the entire picture. Yes, most of the time if the attacker knows/sees the ‘prey’ is armed they stop. IOW youre relying on the attackers lack of backbone for protection. In all other cases youll need to shoot or flee. Most seem unaware they own each shot whether it goes into the attacker, a bystander or something not living. If you own it then youll have to give an account if you kill or wound a bystander. That and most criminals are terrible markkmen...perhaps only marginally better than someone unpracticed/trained or perhaps not. Here again youre relying on the attackers lack. It seems pretty sketchy that a defense strategy revolves around something someone else has/hasnt done....ie your safety is out of your control.
Then theres the idea of what youll do in an emergency situation. Theres a long list of studies/evidence showing that no strategy results in no affirmative action. Frankly, anyone carrying a weapon w/o training is lazy having the wrong mindset and endangering himself and those in the area.