Nevertheless, car-drivers kill frequently on our pavements.(will try to find some stats!)
2 wrongs don't make a right etc etc ...
It is certainly true that motor vehicles kill a great many pedestrians who are merely going about their lawful business in spaces supposedly reserved, and in theory safe, for them.
Scooterists will never take the same toll that motor vehicles do.
However a law abiding and responsible driver does not drive willy-nilly at speed along the pavement seeming to deliberately terrorise pedestrians, especially vulnerable ones. In my area, where there are no hire-scooter trials going on, scooterists are by definition not law abiding and - from my personal observations - are almost always displaying their irresponsibility, riding 2-up, weaving through traffic, speeding in pedestrianised areas and the like. This results in the vulnerable, the nervous, the less-nimble and so on being fearful of using the spaces that are - supposedly - reserved for all pedestrians , not just the alert, the nimble and the confident. to use in safety.