I've been using Jolla/Sailfish since the first launch, totally love it.

Apropos of the fact that nobody ever shows the actual OS, I did do a video showing the actual OS, if anyone wants to see it being used.

https://www.youtube.com/watch?v=6pMfezSulhw

To me this is way ahead of iOS/Android, the native browser sucks, and it requires some massaging to get everything running smoothly, but the UX is second to none. That fact well supported by how many features have been copied by Apple/Google over the years.