Uber UWP was in fact so basic that we'd never covered it here on AAWP - every time I tried to use it I came up against one barrier or other. So the announcement, also shown above right:
Starting 01 June 2018, the Uber app will no longer be supported on Windows devices. Please visit m.uber.com on your mobile or desktop browser to request a ride.
Sounds about right. As long as the PWA (Progressive Web App) served up is better. The good news is that the PWA can be updated server-side, so things should only get better from here on the Uber front. Here's the PWA in action: