Like for example how traffic will often modulate its spacing or time its lane changes to reduce issues with merging or exiting traffic and certain intersections with most traffic doing the same thing become an efficient repetitive cycle, Waymo doesn't "get it".
So it works, in the same way a newly licensed teenager "works". It's no cabbie.
Edit: It's been over a year since I've ridden in one. Good to hear it's potentially better now.