Fedora Atomic variants just differ in the desktop environments.

You can see Universal Blue stuff here: https://universal-blue.org/. But in short, Bazzite is for gaming and the others are for regular desktop uses. All have a “batteries-included” attitude. There’s also some images meant for servers.

Debian 12.7 is a year old. You’re supposed to upgrade to the latest version (currently 12.11) before doing the upgrade.

We have to wait and see if it’s really mediocre. Gnome Web certainly has performance issues, but those may be due to WebkitGTK.

Orion is not using WebkitGTK, despite using GTK and Libadwaita. Their port may not have the same performance issues.

And when I say performance issues, I don’t mean benchmarks. Gnome Web actually does pretty decent on benchmarks, but things like scrolling with a mouse just don’t feel smooth (but do with a trackpad).

This also affects dnf since OpenH264 is distributed from Cisco’s server’s, not Fedora’s.

You can follow this blog post: https://yselkowitz.github.io/blog/2025/08/12/openh264-fedora-flatpaks.html

Should be fine with option 1. Just need to install flatpak-module-tools beforehand.