And no one ever found it in a crash. The door release is also only accessible from the inside which means people on the outside cannot open the door to help unconscious passengers.
In addition, most brands I'm aware of will unlock the car when the airbags are deployed (Kia/Hyundai, Renault, Volkswagen, Mercedes, BMW). Because these cars still have door handles, they can be opened by a bystander after a crash.
The issue is not that the doors are locked. The issue is that unlocked doors without door handles are still useless.
Most cars that have self un/lock functionality, also unlock all doors when the car detects an accident.