Look for a 300% spike in scooter crashes!
I've been helping a friend purchase scooters for his shop in San Francisco, so I know the used scooter market well.
My prediction is there will be a glut of lightly-used, once-crashed scooters on the market next summer. Dented Vespas and scuffed Zumas with under 1000 miles on them.
I don't know what their problem is, but first-time scooter buyers approach motorcycling from a car-owner perspective, and they don't like it when reality smacks them on the a$$. They go into a scooter shop with no education or training, but the scooter that looks the most like their weird fantasy dream scooter (Vespa sells more units than BMW in the USA!) and put it on a credit card.
Motorcycle training is too inconvenient for these people; they don't want to wait...they want to scoot NOW!
We need mandatory training for everybody, not just sub 18 year-olds. If you need it for an airplane, you should need it for a scooter or motorcycle. Yes, even 50cc.