The issue is that you use remote utilities hosted by other resources but as people already pointed out there are utilities provided already that essentially allow this. What "ru" would potentially be is more of a wrapper or alias to existing commands.

I feel that the quote he references in general would simply state that if users are seeking the ability to execute commands on a remote host then there are security implications. We have secure tools for accessing remote hosts and working but generating a catch-all utility would be an act of "reinventing the wheel"