Just this week in Vantaa, Finland three 12-year-old girls piled onto one of those electric scooters you subscribe to with an app and proceeded to get run over by a car at a crossing, killing one of them
The app is supposed to have an age restriction but it's easy to bypass and you're not supposed to have more than one person riding on one, which people routinely ignore
I hate seeing kids and teens speeding around dangerously on those fucking things and then just leaving them laying around on high-traffic bike routes because they don't give a shit since they treat the scooters as completely disposable
Fucking awful bazinga-brained Silicon Valley-ass idea and business model. Actually, there are also bikes you can use with an app but curiously you don't see kids doing reckless shit with those, almost as if electric scooters were uniquely terrible 
Even just in normal use they are dangerous, there doesn't seem to be any helmet laws(nor would they be useful considering the buisiness model) and theres absolutely no built in bell or signal for the rider to use, while also being almost entirely silent, when even bikes make enough noise to be heard without earphones in.
Even in suburban or literally rural areas you get menaced by these fucking things now, its ridiculous.
They're especially awful on twisty urban sidewalks and footpaths where you'd have trouble maintaining equivalent speeds on a bike