Hey Dennis, we will call you 'One Eye' now
You must use self control, just blur eyes, just like you do when you look at your truck and say: naa it isn't dirty enough to wash.
Those fins are far apart, the makers of them know people won't clean them, so in order to avoid warranty claims, they make them....well CHEAP. Having the fins spaced apart helps the rain and going down the road keep them clean also.
As for the damage, I don't know how long ago it was damaged, we just noticed it here in Bozeman after leaving the North entrance to yellowstone.