Well, if you think about it, the Freedesktop Platform is essentially a distribution. And Flatpak used to be called “xdg-app”. If you’ve got all your graphical applications installed via Flatpak, with GNOME, Systemd, glibc, GRUB and all the core dependencies only packaged for the base system (essentially Arch’s core repository), that’s pretty much a Freedesktop OS.
Hey, maybe we could use Snaps for the base system and Flatpaks for the userland? Or are these the kinds of ideas that get people stoned?