Uber was anti-tipping, and it seems like the media backlash forced their hand, to not look like scrooges, together with driver demand for it. I don't see how Uber is trying to make it more common?
> Especially arriving at an airport after a 16+ hour flight, I'm glad to pay a driver to wait.
That might work anywhere but the airport. There isn't enough space in front of arrivals to handle everybody who wants to do this, in a way that doesn't block traffic. Uber already has special-case systems for airport pickups to reduce congestion (that riders don't see).