Jolla has been selling on real hardware since the Nokia N900 of which it's a direct descendant. That platform has been shipping for 20 years. It's been around longer than iOS or Android. What on Earth do you mean "vapourware"?

I have 2 handsets here currently. It is completely real.

I've also been using hardware that some of the Jolla team worked on 20+ years ago. N9, N900 to currently Sony and Volla/Gigaset devices.