Eyes are sensors too. They've just been historically better than man made sensors. At some point we'll be able to collect enough data using man made sensors and then turn it into a clear enough picture using computers that the benefit of having a human making decisions will be limited at best.
It doesn't even have to be as good as a human could be; it just has to be good enough given the problem space and the economic forces involved.
We absolutely do NOT depend on sensors when backing up airplanes. We have human beings walking the plane out, with those funny lights held up to let the pilot know if they are clear or not. Even in cars with rear-view cameras, you still need to check what is going on in the area outside of the camera view. Yes, sensors help, and I'm glad we have them. But I don't trust the safety of myself or those around me to those sensors. I double-check.
That's a pretty false equivalency in my opinion. Airplanes can still "operate" without some of the sensors, and have a much higher maintenance standard.
As the other comment suggested, Tesla doesn't have the greatest track record with these sensors, and putting 16.5 ton driving force behind that could have very lethal consequences.
I just wish Tesla was held to a higher standard of scrutiny.
