Some people have suggested that it’s quite dangerous for Earth to be broadcasting signals randomly into space, because if life exists out there, one of the safest responses to discovering intelligent life (for them) is to immediately send something that will eradicate the newly discovered intelligent life.
The longer you wait to destroy newly-found intelligent life, the more likely that they’re going to destroy you, instead. So, spending the time to research them might be a fatal mistake, especially at stellar distances and time scales.
The alien in this picture may actually be doing the most rational thing in response to seeing this.
Interstellar travel with self-replicating systems is very cheap and proactively takes care of potentially emerging other spacefaring species in your lightcone by strangling them in the crib.
