artoonie

There are some anecdotes that it also happens on Rideshare, but I don't have a car so I can't verify until Uber allows me to pick up passengers on the handlebars of my bike

I just got a lease on an UberCopter. Runways are too far from restaurants. Hope it works out for me!

The salon article was posted with about 8 hours of data in Google Analytics. Business Insider has more up-to-date numbers, with about 4 days of data from the Chrome Extension.

(b) you can change your tip afterward if your service was not as expected.

Just like in a restaurant: maybe your default tip is 25%, but great service bumps that up, and bad service bumps it down. You go in expecting to pay 25%.

Most spot on (within 0.5 mi), some overpayments.

Overpayments are much less frequent than underpayments, and regardless: when someone accepts a trip, who knows if they did it because they thought "that amount sounds fair" or thought "that amount given the distance shown sounds fair." The only fair thing for Uber to do here is to rectify all underpayments, and let the overpayments stand.

Further: just because Uber couldn't find a route as efficiently as the extension could doesn't mean it was an overpayment. The extension uses Google Maps. If the driver used Uber Navigation to navigate, and Uber navigation was twice as long as Google's - is that really an overpayment?

Because Uber doesn't pretend to pay based on miles traveled for UberEats - they pay on shortest distance. So a GPS tracker is insufficient.