Their wiki is what sold me on Arch. I ended up there solving most of my problems on other distros, and if they can make such a fine wiki, I figured they could make a great OS (which they did).
e.g., NixOS just links to the archwiki page here for help with systemd timers: https://nixos.wiki/wiki/Systemd/Timers
I'm sorry to say this but Debian's documentation sucked a lot some years ago.