Why would you want an Operating System to rule them all?
Because clickbait
I am a Fedora user, but I wouldn’t say it rules them all. It has shortcomings, and other distros are better at other things. For example, Debian is better at LTS Servers and Arch is better at bleeding edge, minimal desktops.
A Fedora is cool, but have you tried a Trilby?
I really like dnf as package manager, it’s fast and it can resolve really borked installations. Flatpak also works well there.
Still use it on my Laptop since I couldn’t be bothered to switch to the more stable Debian, but Fedora seems to ‘just work’. As soon as there’s a problem upgrading to the latest version I’ll ditch it for Debian.
However, on my Desktop I tried Fedora and switched to Arch because it’s more bleeding edge. I need those new mesa drivers without resorting to a COPR…