This is the feel-good version that someone wanting to prevent widespread panic may attempt to sell to the public. However, considering that our defining ability

This is the feel-good version that someone wanting to prevent widespread panic may attempt to sell to the public. However, considering that our defining ability, the intelligence, evolved as a tool to anticipate and address our potential problems, I think it would be better to let the situation into public attention as is, and let people worry, because this is how we may tap into what could be a collective thought effort. Aggression may be removed from genes, but it is not the same as conflict. Conflict by its nature is the result of changing force collision, something that may happen for rational enough reasons. Now, considering our cosmic-scale context, I wouldn't bet for all extant creature in the universe to be like-minded, which in itself is a strong factor for potential conflict, even for mature space faring civilizations. Once paid the price for one conflict instance, the intelligence (as ability) dictates preventive actions against another costly conflict. Yes, aliens may indeed ignore us like we ignore ants, but that works only as long as the ants don't proliferate to become a real nuisance for us. I for one, am not thrilled to be in ants' condition in the humans-ants power relationship. That for us, in relation to a technologically-superior alien civilization, would mean and act as a set of hard limits: on space we'd allowed to extend into, on resources (and by extension - on our magnitude as human species), and (probably most importantly) on our technological evolution (i.e. to stay harmless).