They are a complete menace. I'd like to see the police in our area taking some action. It seems about 1 in 5 teenagers has one round here, plus a few pre teens. I have no idea what the parents are thinking enabling their use, I know I would never have purchased one for either of my children.
None of the teenagers riding them round here are old enough to have a driving licence. And we're not in a trial area. I see them ridden on pavements, down the middle of the street, in and out of traffic...
They're completely uninsured too (unless in a trial area and being ridden by someone with a licence) so if one hits your car you can kiss goodbye to your no claims.
What concerns me is when I've seen this discussed on social media, the prevailing opinion from other parents seems to be along the 'kids will be kids/ let them have fun/ scooters are harmless' lines, which is such a facile response and completely ignores all the dangers.