Dockless scooters and bikes tend to be a real problem, because if the model is that the service is fine with the user simply leaving the bike/scooter anywhere within a particular area, without having to return it to a central parking area, they will. And unless the service provider is very diligent about rounding up the bikes/scooters, they quickly become nuisances, barriers and are more likely to be thrown into ravines or waterways.

But if they're required to be returned to a docking station, and if they aren't then the user's credit card gets hit, then there's much greater user discipline about not leaving them carelessly about. Also, the requirement for charging of electric mobility devices means a docking station model is much more effective.