[distances]

It's not as clear-cut as that. This is a case for automotive, and there isn't a single native UI widget set that Qt could use/mimic. It absolutely makes sense to use QML for custom UI development, it really shines there -- using Qt widgets for custom UI on touch screens would be madness.

I've used Qt myself for desktop, mobile, and embedded development. For mobile and embedded I would not use widgets, and probably not even for desktop. I understand why the widgets still has staunch fanbase, but they do not belong everywhere.