Lasted about 2 weeks and I saw my ratings plummet. Riders take, on average, 2 Ubers in a day. Most observant ones will know which of the two rated them poorly. They can see their ratings before they have to give you yours.
Besides, getting a low rating from a driver isn’t going to tell them that they got it for not tipping. Rating them 1 isn’t going to solve the no tipping issues, all it’ll do is adversely affect your ratings overall and severely askew the pax ratings for other drivers.
When I see a pax rating, I want to know if they were truly a bad pax. Did they slam your doors? Did they puke in your car? Did they treat you poorly? Those are the pax I don’t want to pickup. If they were pleasant but their only fault is they didn’t tip, I’ll still take them as a pax. Half of them are just blissfully ignorant, swallowing Uber’s “No Tip Needed” propaganda, so it’s not entirely their fault.