And we need, as parents, to make absolutely sure that our children know how to be safe around roads, ReallyTired. Because the numbers of cars, lorries, buses etc are not going to decline dramatically, unless there is a big change in government policy towards public transport - particularly the cost of public transport - and making it more frequent, making it meet the needs of the users better, and making the different forms of public transport match up better.
As a driver, it is my responsibility to ensure the safety of people around me, and as a pedestrian, it is my responsibility to be aware and careful of traffic. When my dses were little, it was my responsibility to ensure their safety on and around the roads too.
You are right that it is illogical to say all scooters are dangerous because of one tragedy - but we do need to learn from all these incidents. And, to my mind, it's not the scooter that is the main problem - it's the supervision by the parent. I do wonder if the scooters contribute to the problem because children can get so far ahead of their parent, so quickly, so if they do get into danger, the parent can't easily hoick them out.
I do drive carefully, do my best to be aware of the pedestrians, and do obey the speed limit - but if a child shot out on a scooter, right in front of me, even at under 30mph, I might not be able to stop in time. I have had a child on a bike, whose brakes hadn't worked properly, shoot out in front of me as I was pulling out of a driveway. Luckily, I was barely moving, so stopped without touching him, as he fell off his bike in front of my car - but it was a terrifying and shocking experience, nonetheless, and I cannot imagine how horrible it would be if you actually hit a child, even if there was nothing you could do to prevent it.
Even when you are hyper aware of pedestrians, there are places where parked cars/vans/lorries, or hedges, walls etc will obstruct your view - in the incident I mentioned just now, there were high hedges either side of the driveway - which is why I was going so slowly - but I didn't see the cyclist until he was about to come off the pavement in front of me. In that situation, I was able to creep out really slowly - but in normal traffic, on the road, you can't creep along at 2mph. Hence why pedestrians (and the parents of young children or those who don't understand road safety) need to take responsibility too.