Wrong. When I turn my head in real life, I can't see what's behind me in the video game...
And nobody constantly moves their head at a tv screen. But in real life, when you move your head rapidly, you get a motion blue. So IMO, I believe it would make Skyrim more realistic.
That's not motion blur. Motion blur is strictly a camera
effect due to low shutter speeds. What you're experiencing with your own eyes when you rapidly move your head is just a blurred vision due to your eyes being constantly out of focus. No people can experience motion blur in RL unless they're badly visually impaired.