Auto-wipers look completely broken, and totally unsafe in this video.
How can an optional, user override-able feature that activates the wipers be "totally unsafe"?
As to the video, it looked (from the first 2:30 or so) like it was not raining. The moisture was kicked up by the passing cars. Because of that, the driver's side (especially the mid/lower part) received the bulk of the spray. The passenger and upper center where the camera is, appeared to stay much clearer (esp if the camera heater was evaporating what spray did hit there). Any sensor can only see what is in front of it.