Initial Impressions compared to Spacemacs is that it is a lot faster. Spacemacs can take a second to refresh with commands sometimes, but that may be because not a lot of plugins are installed yet.

Currently Windows 10, since I am at work. It seems to work in terminal mode fine.

Only things that failed to build where the phpcd and phpfold plugins, which I don’t care about.

I skimmed the install script:

 case $1 in
        --uninstall|-u)
            info "Trying to uninstall SpaceVim"
            uninstall_vim
            uninstall_neovim
            exit 0
            ;;

So it has to be:

curl -sLf "https://spacevim.org/install.sh" | bash -s -- --uninstall

But you are right, by intuition I had tried it as a subcommand as well, not as a flag…