Doesn't matter. If you drive into a slow-moving or stationary object then it's your fault in every sense. If you are driving too closely and are not ready to react to the vehicle in front doing an emergency stop for any reason then it's your fault in every sense.

Most human drivers I observe are taking huge chances every single day. I see them drive at speed around corners they can't see around fully, driving far too closely to cars front, using their phone etc. They get lucky but it's only a matter of time before they have accidents. The three incidents recorded here are simply due to three humans' luck running out.