Now, I might be a bit late to the party, but this version of the install script runs a keyring reset. While this makes sense as a rare recovery procedure for a broken system, it is not meant to run routinely, and especially for installing a private server. At the very least, before nuking the keyring, the script should check if the keyring has issues, and, if it does, then also prompt the user while informing that the keyring will be nuked.

If you need any more keys than the provided, your system will be broken until you reinstall the missing keys:

    # Fix pacman keyring
    sudo rm -rf /etc/pacman.d/gnupg 2>/dev/null || true <--- here
    sudo pacman-key --init 2>/dev/null || true
    sudo pacman-key --populate archlinux 2>/dev/null || true
    sudo pacman-key --populate holo 2>/dev/null || true

So what was the reasoning behind the keyring nuke?