I honestly didn't have a big issue with powered scooters until they turned into VC-funded litter all over my city. They were clearly in the category of "experimental vehicle", like e-bikes, the tourist GoCar things, Segways, and whatever those one-wheeled feet-wrapping things are called. They were small in number, their users were responsible participants in traffic, and it was interesting to see where they went to. And I'm a big fan of the Go Bike bike sharing program, which worked closely with the city to integrate well into the urban environment.
But suddenly, a few different startups seemed to believe that they could turn the sidewalks into their place of business, turning a lot of untrained goofs loose with a powered vehicle. Even if I were chill about the probably-illegal taking of public space for private profit (and I'm not), the sudden rise in dangerous idiots on the streets is a big deal for me.
Now my general feeling with these clowns is "Oh, fuck me? No, fuck you." I'm generally very pro-entrepreneur, but if my city bans these clowns, I will shed no tears. Let them serve as a warning to future overly entitled entrepreneurs.