That’s where the stupid part comes in.
I really do hope you aren't being so rude as to imply that I'm stupid because I have a different opinion on this.
I'm really not convinced that if used sensibly, something that is limited to 20km/h (or 6km/h in pedestrian areas) requires wearing of a helmet, having a plate registered and insurance.
To my mind, there should be a form of mobility one step above walking, but below the threshold where it constitutes a motor vehicle (electric or internal combustion powered). Wearing a helmet, having plates and insurance. Something someone can carry on the metro and use to ride to the office. Or rent through the app on their phone. Having to wear a helmet is just something that goes with the territory of having a motor vehicle with plates on it. Getting too hung up on the helmet safety issue when we're talking about a very low risk form of personal transport is a mistake I think. It's not a universal truth that one must wear a helmet as soon as one propels oneself on two wheels.
If you can see the wood for the trees (moss), imposing these restrictions is just a ham-fisted way of making sure that it's impossible for anyone to offer an e-scooter rental program in the cities by way of anti-environment political points-scoring.
What has happened in London (and is largely irrelevant to the Italian issue) is that many boroughs have banned e-scooter rental by way of forcing the companies to exclude them geographically by GPS on their apps. I believe I read that the Borough of Ealing is currently running a council-supervised trial program with them and parking and speed limiting is tightly controlled by GPS. I acknowledge further up that e-scooters are a bit of a PITA, but I'm all for making personal mobility easier outside of using a car.
Hopefully you get where I'm coming from on more of an environmental point of view, looking to how cities might be in the future. It's not that I don't care about the risks of using these types of devices, but I think it's unfortunate that some have sought to make it wholly impractical when it doesn't need to be.