LIDAR is more complicated than camera-only approaches. Human drivers have just two eyes, surely software can do better than humans with more eyes that have better resolution than our own. Simple.
Human drivers have two eyes and a brain evolved for storing visual hints.
And LIDAR is not that complicated, too. Just not the simplest thing, that would be rails and pantographs, whatever you would translate those to your vehicle.
Something is missing, time will tell if training will produce more solid models.