Uber staff rate customers. They don't hide it. They want customers to know it.
Some drivers event propose to trade a 5 star to you vs. a 5 star for them.
The fear of getting a 1 star make drivers ultra polite.
And what about you knowing you're rated?
Of course, you don't behave like a "rated version of you a lot nicer" in Uber car.
Of course... It's well known that rating and judgment don't change behavior.
It will be a lot of fun when every interaction we'll have will mean a mutual rating and we'll all have scores. Better not be too rude...