That's the exclusive work of the Hyprborean dev (who himself is another giant crock of shit who I wish just wouldn't wake up ever again one day).

You can install it on your normal, average Arch installation anyways. Don't need to rip everything out from the root just for a pre-configured meme distro. It's not as if Omarchy had hard forks of all the software it steals, anyways. It really is just dotfiles.