They’re not supposed to do a lot of things, and yet they do all of those things. They speed, they overtake dangerously, they kill pedestrians and cyclists, they kill or injure other motorists.
“But there’s a rule against it” doesn’t resolve problems like all the pedestrian and cycling deaths that we seem to accept as a needful sacrifice to keep bad transport infra and as-is. There are also rules against scooters operating dangerously. I’m not sure why bigger, heavier, more-powerful vehicles ought not to be subject to similar kinds of controls scooters are