It’s a common talking point, I doubt that comment was sarcastic. Musk has said that he thinks Lidar is useless because humans operate vehicles with just vision, which of course is an unfair comparison since humans have intelligence to help them.
This has always been a ridiculous argument. Human eyes have a much higher contrast ratio than commercial cameras, and have built-in stereoscopic capabilities with some degree of rangefinding thanks to the fact that they are quickly adjustable. Normal cameras have none of that.
