I wonder why he is even apologizing. I assume he can't be fired because of dual class voting structure. I don't think he actually cares about the driver.
You can be "fired" by virtue of your top people walking out on you, though. Better for him to placate the ones who might have a spine.
I have talked to numerous Uber people over the past month and there are many that are locked in because they can't trade the stock and can't afford to exercise the options because of the valuation. Very unhappy .
Probably better for business this way, and costs nothing.
As I've said elsewhere, I wouldn't be surprised if Uber's Board of Directors could still fire him.