The Arch Wiki it's a joke as it gets obsolete with every major upgrade. OpenBSD has the FAQ and all of the base it's throughly documented. GNU/Linux manpages? Info pages? Often either incomplete or missing. Don't let me start on compatibility. On your beloved overengineerd turd, you need to resort to either containers or hacks to run 10 yo software. FreeBSD will just run it through compatNx libraries, where N is the version number, and there's a -32 (bit) suffix for obvious needs. Now, how can you run legacy software under current Arch Linux? Yeah, there's Flatpak, but I've found broken software on it.

Altough on compatibility, under 9front everything it's statically compiled, period. Compile, store, copy back, run.

Docs? man pages, and /sys/doc. Easier to be understood and set.

Current Unixes are too bloated. Yes, FreeBSD too. NetBSD and OpenBSD, a bit less. GNU/Linux it's such a monster that over time I'd guess Guix will just keep Coreutils as a toolbox and everything will be jitted Guile/Scheme, and for the rest of the distros, it will just be Wayland+Gnome+Flatpak OS. Now try hacking that. Try creating a working 32 bit OS with it. Documentation beyond GUIX' info files? Good luck, man will be a legacy tool called from Info from Guix.

SystemD? Over time, Gnome won't be under non SystemD OSes. Forget it under BSD's and shims, KDE will be the only option (and under Guix too). The irony, GNU Networked Object Model Environment outside of the GNU os.

Meanwhile, by default GNU/Linux has more propietary bits in the kernel than GNU bits. Untar it, Radeon depends on nonfree firmware. So does tons of SOCS, audio devices, wireless cards. Linux Libre + Guix? Not with Gnome, maybe with a Guile JIT/AOT'ed desktop environment, a la Cosmic but with AOT'ted Guile instead of Rust. Forget cohesiveness, your Redhatware OS will be as native to the rest as Waydroid inside Fedora Silverblue. Seamless, but not native. And with similar issues on running some software in Waydroid without hacks faking up the existence of some blobs.

And as tons of infra depends on SystemD and blobs, guess what will happen to Arch and the rest of the distros. It will jut be second class, Pacman packaged Fedoras.