But as 99% of mopeds and scooters here in the Netherlands are automatic or even single speeds or whatever, (I don't know anything about scooters) you can't really identify them with (real) motorcycles.
This is why my criteria is having the gears. Having ridden scooters on occation I find them to be boring, uninvolved modes of transportation. Anyone who goes trough the trouble of learning manual shifting deserves to be considered a motorcyclist.
Remember, there is plenty of moped riders with more experience than those "motorcyclists" who buys their midlife crisis bike only to let it sit in the shed for 4 years before selling it.