Care to show us all of the stories where those things happen?
one nurse I know knew karate, yet was raped because she “froze” when attacked.
Twenty percent of the US Army in world war II were found to never have shot their guns despite being in battle. Training has improved, but not eliminated that percentage.
Unless your mindset is “attack mode”, and unless you have had training to do things automatically in times of emergency, you often freeze, be it civilians confronted with a car accident, or a civilian confronted with a thug who wants to kill him.