Yeah it's interesting hearing their engineering logic, that fewer sensor types means less sensor collision and faster iteration, where iteration speed is really what matters. I also think people overhyped lidar because they don't understand it, and human behavior is to associate things we don't understand to magic. It's not magic, it performs poorly in inclination weather and can have issues with resolution over range and data processing (although lidar does do a lot of things well).

All of this said, once Karpathy left they have slowly looked at adding new sensors (recently radar), so who knows what the future for Tesla's sensor suite holds.