Driving While Peering Through Beaded Curtains? Not Me!

It’s illegal to drive when your view out the windshield is obscured by crap, I mean paraphernalia, right? I have vague memories (what other kind do I have any more?) of a page in the DMV handbook, featuring a drawing of fuzzy dice with the circle-and-diagonal-line symbol (the universal “no”) printed over them.

Then why don’t drivers get pulled over when they’ve hampered their own ability to see outside the car by festooning their rearview mirrors with leis, graduation tassels, air fresheners, religious medallions, and even crystal dangles that can flash light right in their eyes (or the eyes of other drivers)?