Bike lanes in the US are incredibly unsafe for bikers and scooters, and accidents easily result in death of the biker/scooter.
Scooters and pedestrians sharing a sidewalk is also unsafe, but accidents are far less lethal.
The problem is that bikes/scooters are adding a third distinct speed fundamentally incompatible with the existing two, and that takes up a lot of space costs a lot of allocative inefficiencies (what if there are lots of cars and pedestrians, but no bikes/scooters at this moment?). There's no easily solution but if we're going to ask scooters to share space, at least choose the one that is less fatal, as annoying at it is for pedestrians.
Scooters and pedestrians sharing a sidewalk is also unsafe, but accidents are far less lethal.
The problem is that bikes/scooters are adding a third distinct speed fundamentally incompatible with the existing two, and that takes up a lot of space costs a lot of allocative inefficiencies (what if there are lots of cars and pedestrians, but no bikes/scooters at this moment?). There's no easily solution but if we're going to ask scooters to share space, at least choose the one that is less fatal, as annoying at it is for pedestrians.