They sometimes post videos of situations they deal with, especially around bikers and pedestrians. It's quite impressive how well it handles such cases.
In fact, the very same channel (JJ Ricks) has a ton of in-the-field Waymo videos where it works exceedingly well.
Perhaps that not everyone records a taxi ride and posts it on YouTube.
It's the kind of thing that could all be fixed in a few days of rehearsals of what to do when cars get into this state. I suspect that the main failure was that rider support had a button to 'pull over', but that the route to pull over was blocked by a cone, so the car failed to pull over, and then rider support seeing the failure probably tried to cancel the pullover (to try again), and it ended up keeping driving.
A simple logic change or even just better training/documentation could have fixed this.