I really like the concept of immutable/atomic distros, but right now its just not a super viable option for me. Every time I've tried one, there's always been something that I felt like I either couldn't install, or ran into a lot of resistance installing. Something super basic for example is OpenRazer in order to control the settings of my mouse and keyboard - the backend of OpenRazer exists as a DKMS module, and kernel modules seem to be a bit more difficult to install on an atomic distro than a "mutable" distro.

Most atomic distros have some sort of escape hatch/"break glass in case of emergency" way of installing packages directly (such as layering with OSTree distros), but those tend to have their cons and also feels like its going against the whole point if I end up having to use it a bunch.

NixOS was interesting, but I just don't have the time to learn Nix, I've tried on multiple occasions and get mostly there with configuring my system how I want... and then there's something that just doesn't work and ends up being a deal-breaker for me.

I think the endgame solution for me would be to look into something like blue-builds so that I can "craft" my own image, but again, time is the limiting issue for me.

That all being said, just because it doesn't work for me personally, that doesn't mean it won't work out for you - I'd advise anyone to give it a try if their interested.