That’s the one. I personally use bazzite which has a bunch of gaming stuff and distrobox ready to go. It’s also possible to switch to or between it and any of the other ublue spins with a couple lines in the terminal. I’m not sure if the silver blue based ones like kinoite are included in that. It’s neat being able to try out some other DE’s like hyprland and switch to something else without doing a reinstall or losing personal data.

For my non gamer family members kinoite has everything they need though.

The downsides I’ve noticed so far to these immutable systems is mainly with things like messing with kernel modules and other deep system stuff. I wanted to enable undervolting without disabling secure boot but that seems to require building the kernel with a couple patches and signing modules with a mok and installing the mok to uefi. Annoying. The ‘workaround’ is seemingly to make your own ublue spin which sounds like a pain but I’ll try it eventually.

Other than that most things that aren’t in flatpak or fedora rpm repos via rpm-ostree can be installed using arch Linux via distrobox. It’s a bit janky at first but it’s seamless after going in the distrobox and doing ‘distrobox-export --app (name of program to launch via terminal)’ I didn’t like it at first but I have come to enjoy being able to use the software availability of arch without updating everything every other day.