When I first used a backup camera in 2015, I immediately felt it should be required due to how easy it is to see if there is a kid or dog behind your car while backing up. I'm glad they actually did make it required! Though my issue with it now is how there doesn't seem to be a standard resolution, field of view, etc. So some cars have a terrible backup camera, but there's always turning your head around and looking back there!
Next they should make front cameras for personal trucks required!
The concerning part is always "it's happening faster than they predicted!" I'm not sure what contributes to the models being so far off.