I wonder why they are legalising rental ones but not private ones? Probably because they can control speeds/modifications easier?
I hope they legalise private ones I really fancy one
Good article here that sums up the position. Mentions the biggest concern is not so much safety but.
“However, the biggest concern is that like dockless bikes in major cities, these e-scooters will end up on pavements, unfairly obstructing the way for people with disabilities. It is still not clear whether companies will be obliged to fund docking stations for e-scooters or set up a more efficient collecting system if they become more widespread.”