I didn't say the rating wasn't also awkward. Though that's sort or convenient in its way, once you understand its unwritten social rule, since that boils it down to me just having to make a snap decision of "was this ride bad enough that I want this driver to get fired? If so... 4 stars."

(Yes, I think the 1-5 star rating scheme has its own notable flaws based on how Uber seems to use it.)