Will the lenses get too bad to pass safety inspection before the warranty is up? If I were in your position I would consider taking legal action and press for a recall.
I completely agree with you. It is ridiculous for a part that can have an impact upon the safe operation of the vehicle to not be covered by a warranty or a recall situation. What if you were to get into an accident due to reduced visibility conditions due to the lenses? I'm sure you could find an accident lawyer to eat that one up, but is that what it will take to get something to happen?