I have a helmet cam and a rear view cam. If there are no incidences during my ride, I erase the videos. I have used captured images to report bad driving of commercial vehicle drivers to their employers.
Out of curiosity, I watched the videos taken by the rear-facing camera on busy streets to see what motorists actually do when they approach me from behind. I am quite pleased that they follow at a safe distance and change lanes when it's safe for them to do so. I haven't been bullied on the road for a long-long time since I started wearing my cameras. It could be the awareness that Covid has done to make bicycling very popular or it could be that over the past few years, motorist have grown comfortable and more acceptance of cyclists on the road with them.