Too many stickers on car windscreens restrict the view

As the title says.
I see more and more the L sticker and N sticker applied to front and rear screens these days. Apart from the usual 3 discs, now the 2 large letters and probably the furry dice, this has to restrict the view on your average Nissan Micra.

Ironically, these are the very drivers who need a very clear view.
Surely, if the (N) driver, now has a younger sibling driving with the (L) plate now fixed to the vehicle, this should also cover the (N) driver.
I can only assume, its there as a badge of honor to the (N) driver

Most of these drivers, will be driving your average small car,and so this new restricted view becomes a lot more obvious, and puts the (L) driver at more of a disadvantage, to the front and rear view of the vehicle.

An excellent point.Perhaps smaller signage would be a compromise.

Or display the relevant plate for the relevant driver, and only that plate.
L driver driving - show L plate
N driver driving - show the N plate
Full licence holder, i.e. parent - show no plate
This is the law in Australia, and it is an offence to show the incorrect plate, and you will get stopped and fined!
After all - it is the driver who is licenced, not the car.

How are the guards to identify who is an L plate holder, N plate holder etc. if the car is festooned with both?

From the RSA website:

‘L’ plates
Attach them front and rear so that they are clearly visible. Place where it will not hamper visibility – tax, insurance and, if applicable, NCT discs should be on the windscreen.

Front and rear to me does not mean on the glass.

There was a discussion here about N & L plates:

http://www.askaboutmoney.com/threads/n-l-plates.190731/