I have heard this notion and, respectfully, i think it is bonkers. If a super advanced civilization wants to pulp us, i doubt they will need any help in finding us [as they are already watching the '38 Olympics and I Love Lucy. If, alternatively, they are some nomadic space dickheads looking to pick a fight, than i can think of no better way to prove that we are ready to be an interstellar species. Finally, if they are some insectoid space roaches that can hurl meteors across space at our little marble... good. I want to be a Starship Trooper. In any of these situations, humanity will become unified and space marines become a reality. Yayzors. I know this is a lot of silly conjecture, but the thought of multidimensional super beings having it in for us is as far-fetched as an invisible Jew in the sky who writes down everything you do and hates gay folks.