The electrification craze is finally here with the scooters. They are easy to use, no effort, fun, cheap (compared to most other modes) and door-to-door: a combo of factors that no other form of transportation can offer in our city. I agree with
@zagox; it will take time to work out the kinks, build norms and have people adjust to these new technologies. I debate whether the sidewalk is the right place for them - sometimes it makes sense, other times they are too fast for congested sidewalks - they have added more evidence to prove how woefully narrow our main street sidewalks are.
I suspect this is just the beginning. In less than a month since they arrived, shared scooters are averaging 8,000 - 12,000 riders per day and we haven't even seen the other models and formats out there yet in other cities (beefier models, ones with seats and cargo capacity etc.) We should be all waking up to the material shift in our transportation mix, particularly the inner city but elsewhere too. Hills no longer matter as much, neither does traffic if you can comfortably keep up with most of it regardless of your personal fitness level. Remember it's not just the shared ones to think about, for-purchase models are common in other cities and will be showing up here now that people have a taste for it.
All this is pointing to cars having to give up much more of their space in the inner city at first, but eventually elsewhere. The sidewalks are too congested already, let alone when a couple hundred scooters show up and the inner city continues to add population. Even if they are parked properly - not a guarantee of course - they are taking up too much room. Street corrals should be added all over to fit them but taking out street parking. Bicycle / scooter lanes should follow on almost every street, protected lanes where possible, including in the burbs.
Injuries and inconveniences are inevitable, especially as we build a different transportation culture from nothing. But by car standards, scooter costs are a drop in the bucket compared to the damage cars do to people's lives, health and finances. One day - maybe sooner than we think - I expect you'll seen a walking, bicycle and public transit back-bone form (more than it already is in the inner city) combined with shared e-scooters,e-bikes and car share taking over the whole system. Over time fewer and fewer private vehicles except for delivery and trades vehicles.