Weird. That used to say “container-native”, which at least makes sense – it heavily emphasizes container technologies like Flatpak, Docker/Podman, and Distrobox.
There’s no yum or dnf like on a standard Fedora system (though you can use rpm-ostree if you are desperate). As an “immutable” distro, it’s designed so that you do not install apps at the system level.
I’ve never actually tried it, but I think you could use BTRFS subvolumes to multiboot without partitioning the physical space.
And then maybe even use deduplication across subvolumes?