4.8 is not a good Uber rating these days. Giving anything less than 5 stars requires you to justify your rating now. 4.8 means roughly 1 in 5 passengers were annoyed enough to go through this.
And yet he is(or was) still on the road, so I'm not sure how the rating helped. Or maybe more specifically - if you saw a 4.8 rated driver was coming to get you, would you cancel the booking?
I probably wouldn't cancel the booking, but I've come to expect that with a 4.8 driver, there's a pretty good chance that something won't be satisfactory. Uber doesn't kick the driver off until their rating gets below 4.6, but Uber also won't let drivers drive for their premium tiers without at least a 4.85.
As an example, last week I had a 4.8 driver drive to the wrong pickup location, then I called them to explain, they said they were coming, and then they started the ride without me in the car and started driving towards my destination. Naturally I had to fight with Uber to refund the $10 cancellation fee.
The drivers that are reliable and you can count on to not pull stuff like this are all 4.95+.
