Well, that's true.
But one fun quirk is that (at least here in Finland) the EU plate isn't mandatory, you can get a clean one with no country code but then if you leave the country you are required to indicate your country of origin with a bumper sticker. So the automated license plate reader might need to be able to figure out from what country this is, and often that sticker will be stuck to the corner of the rear window.
Also a reminder - there will be no sticker on the front :)