Why?
Any idea of a possible rationale for hte rule, which apparently existed at one time, based on the cached page? There is no potential for the traveler to be turned back by governmental authorities as on an international flight, so why in the world would a driving license be acceptable for EU born but not non-EU born residents? Especially when birth in the EU does not necessarily = citizenship, as any number of German-born non-German citizens could tell you.