In France it’s legally a bike only if the electric assistance stops once you reach 25 km/h. Anything where the motor can go higher than that (or even something where the motor can push when you’re not pedaling) is considered to be a light scooter and therefore need a license plate and can’t go on bicycle paths.
I thinks it’s pretty fair. The only issue is that some sellers advertise those little scooters as electric bikes so some people use them without being aware they’re illegal.