I guess because the majority of Linux folks don't really care about making it a solid user experience for normies, and those that do so might have strong opinions on things that might not roll with everyone, especially coming from Windows (read: gnome).

I've maintained an in-house distro for a couple years so I know the ins and outs of systemd, dbus, polkit, xorg and whatever crap is needed to run a desktop session, and how to track down what's broken if the system misbehaves in some way. So switching every machine I use to Linux wasn't really an extra burden. Ironically it made me switch to i3 as my WM and ditching a file manager, gvfs and other moving parts. I'm doing a lot of things in the terminal. I loathe complicated setups - less moving parts, less things that can break. But I'm fully aware that I'm a complete oddball here, and I don't think nor care whether the day of the Linux desktop will ever come. Unless maybe we're at a point where really absolutely everything runs in the cloud and people only need a browser. But at that point just get a Chromebook?