I do not live in California and am not up to speed on this issue, but as a casual observer I am shocked that they were allowed on the road without being ticketed for violations like any other vehicle operator.

Completely agree. How is it possible they issued these permits (years ago it seems) without having this infrastructure in place?

Scooter companies are allowed to violate ada putting the scooters all over the sidewalk where there isn’t 3ft of space to pass them.