I think most of the popular Linux distributions have been shipping rootless x11 ...

peatmoss · on April 12, 2017

Interesting, I hadn't known that. Canonical's site indicates that there's some nuance there depending on the video card model though:

Also interesting is that support for rootless (at least in Arch) depends on, or perhaps was facilitated by systemd:

I don't pay as close attention to Linux developments as I should these days!