Scooters going painfully slow in bike lanes will not be terribly different from cars stopping in them. Either way, you have to merge into traffic to pass.
Not much different? A car is about 10x the width of the scooter. And bike lanes in the city are wide enough to allow passing within the bike lane if the slower traffic stays on one side.
I bet that in places such a Utrecht and Groningen, scooters are much less in vogue since the default option available to both young and old is the bicycle.
This is another case of Silicon Valley looking at using more tech to solve a societal and political problem. However, unlike Tesla/Uber/Waymo et al, it's a little more grounded.
https://twitter.com/BrentToderian/status/626511830261760000