I don't care what somebody did or how they got lucky when they registered it.
It ain't a moped and it ain't a scooter.
That Derbi and the Aprilia RS50 are both full on small motorcycles with 6 speed gearboxes and a manual clutch and about 8 HP and full suspension and disc brakes front and rear.
(and no PEDals!)
If governments want to change their wording to classify it as a moped... fine(great!)... but it ain't a moped.
Hell... I guess you could call it a toaster...
In fact... I have just decided to call it a capuccino machine.