This seems to be a modern allegory on
Noise. Too much noise: talking, arguing, cellphones beeping, loud crass music, cars, air conditioners, sirens and on and on. "Aliens" came to tell us to shut the f*ck up or we will die. Silence equals survival and (relative) peace.
Someone must have had this in mind upon creating this idea. If not, that's what jumped out at me.
Thoughts?