I'm guessing the author didn't play Cyberpunk at launch -- the cars and pedestrians would blink out of existence if you turned around. I couldn't help but think that Rockstar had figured this out 19 years prior in GTA3. :/
Flicking the camera down to despawn cars is a common trick in speedrunning those 3d GTA games. They did it better than cyberpunk, but it was not figured out.