They never gave it time for the novelty to wear off. People, not just the riders need education. In Brisbane it is great. They were a bit hectic to begin with, but it settled down and people tend to follow the rules and if anything, self-police, telling other people off for breaking the rules. They don't bother to enforce the rules but will happily ban them. It is like a big form of lazy parenting. As far as injuries, I have problems with mobility and I find a scooter safer to ride than a bike, it is way more controllable and is easy to just step off rather than dismount like a bike. And how many people get injured on bikes in the same time period? I don't hear any comparisons to give gravity to the numbers.
Bigger issue is the clowns that dump them on the footpaths . Buy your own scooter or ride a friggin bicycle! Bikes are faster..keeps you fit and way more fun
The argument that they are good for the environment isn't very sound. Those lithium batteries that contain lots of forever chemicals (both PFOS and PFAS) are clearly not good for the environment. It might be argued that a traditional bicycle from steel and aluminium that you can easily recycle is good for the environment.