It’s an old blog post, but this doesn’t look very good for System76. At the same time, GNOME (and GTK) is refusing to implement basic features. Stuff like server side window decorations, because they can’t “tolerate” SSD. The hard enforcing of Adwaita theming might make sense in GNOME, but on devices not 100% in the GNOME ecosystem, libadwaita apps have awful UX. I do not want shit like Zenity to take up 50% of my screen space for 3 words and 2 buttons, yet libadwaita enforces it.

Unless Arch’s lts kernel switches to a newer lts (in a year or two?), you can run nvidia 580 dkms modules and the lts kernel with basically no maintenance.

After that, you can consider something like linux-lts66 from AUR, or switch to another distro if desired. The first option requires compiling the kernel (no maintenance, just processor time), and will keep your system security patched until the last LTS kernel supported by nvidia 580 modules stops being supported.

Whatever kernel you choose, ensure you have the -headers, like linux-lts-headers. That way, the nvidia-580xx-dkms package can install properly.

If you haven’t yet, look into an AUR helper like yay or paru. These significantly improve quality of life when using AUR packages.