[FullyFunctional]

I have this alias in my .bashrc and run it when I'm tired of seeing the red dot:

    nocatalina() {
      sudo softwareupdate --ignore "macOS Catalina"
      defaults write com.apple.systempreferences AttentionPrefBundleIDs 0
      killall Dock
    }

[viraptor]

The first command doesn't work anymore unfortunately. You'll still get it listed and it's a potential footgun.