Glancing over the website, I thought it's an immutable OS, like Fedora Silverblue. I could imagine that it might be cool to use with Ansible and stuff. But for an average user? I can't really see the advantages in respect to the work you have to put in.
Same. If I wanted to set up multiple PCs at once, I would definitely consider it, but for my workstation? I'd rather have the newer packages offered by the Arch repos. Even with that said, you can use KDE's apper to quickly install a bunch of packages.