In my experience it is the majority of users here in London. They feel like quasi pedestrians so they run lights, use pavements and operate without a driving license (as required by law). Given at the moment there are so few of them relatively speaking the coming epidemic of scooters will be a disaster for pedestrians
I'm not saying they get a pass, I'm saying that if you're also not outraged at the way cars are operated you've got a double standard. It's very trendy to hate on scooters.