Safety in numbers is the positive Voi-effect I feel. E-scooters are bicycle sized, move at more or less bicycle speed, and just as importantly they move in a bike-like way – filtering, swerving, nipping out at left-turn junctions, being obstructed by parked vehicles – think "Pob on a BSO" rather than "roadie in Castelli" or "road-toughened tourist/audaxer". At the moment, most drivers are still giving a lot of room, which I feel has fed through to more clearance being given to bikes too. I reckon this is partly because they look vulnerable and partly because so many of the riders are students and similar demographic who clearly lack traffic experience, so this might not last as the user base broadens, which it surely will, but the similar movement effects should continue.