Living in a major city which also has a buzz about banning scooters and scooters being banned in some more posh neighborhoods already, I have problem with this.

The problem is obviously not the existence of scooters but how people would pile them up or ride them carelessly on sidewalks. IMHO, the solution would be to create infrastructure and usage rules. Seize the scooters from those who do not comply. Eventually, either the scooters would stop causing problems or they will no longer exist.