In my locale, mopeds / scooters had a very narrow niche, among college students and some employees, because they could be parked for free. You didn't want to be driving through the campus in between classes because of the scooter traffic. When the university started restricting and charging for scooter parking, the scooters vanished. At the same time I've seen practically no e-bikes in the racks on campus. Most student housing has no indoor bike storage, and they're hard to carry up stairs so it's a problem to find a way to charge them. On the other hand, as I've told my kids, "you were born with feet, you can pedal a bike." Conventional bikes have returned to their proper place at the top of the student transportation food chain.

In trafic a moped is better than a car, and an ebike better than a moped, regardless of regulations. If they impose a full helmet for ebikes I will hate it, but still choose that over a car.