Earlier quoted context omitted.
Just the bikes and scooters? Not, say, the idle cars left on streets all over town?
Cars are at least parked in designated spots/areas. Dockless bikes and scooters don't have a designated space to park in; they have to be left on the sidewalk, and they can be dropped anywhere.
Most people, generally speaking, are good people. They put bikes where they're supposed to be, they put scooters where they're supposed to be etc. It isn't just enlightened tech commenters who know that a bike should go in a bike rack.