We can agree that the driver made bad choices but I feel like you are skimming over the 2 women's responsibility in this situation. Intoxicated to the point of vomiting, arguing over the cleaning fee, and wandering away from the car while parked, yes illegally, on the freeway.
Not sure what your experiences have been with drunk people but I can tell you that dealing with 1 drunk person can be hard to control, let alone 2.
I'd be interested to hear where other people draw the line on the driver's culpability. If he left them at a gas station and one of them was still hit and killed by a car would he still be at fault? In my mind Uber/Lyft provide transportation, they aren't babysitters, there has to be a limit to their responsibility. Perhaps the driver was more at fault here but this outcome (how the driver reacted) is not in the slightest bit surprising to me given everything I know about Uber and how it treats drivers and passengers.