if additional sensors improve the ai, then your last statement is categorically untrue. The reason it worked better is that those additional sensors gave it information that wac not available in the video stream

Multiple things can be true at the same time you realize. Some problems, such as insufficient AI can have a larger effect on safety, but more data to work with as well as train on always wins. You want lidar.

You keep insisting that cameras are good enough, but it’s empirically possible since safe autonomous driving AI has not been achieved yet to say that cameras alone collect enough data.

The minimum setup without lidar would be cameras, radar, ultrasonic, GPS/GNSS + IMU.

Redundancy is key. With lidar, multiple sensors cover each other’s weaknesses. If LiDAR is blinded by fog, radar steps in.