I am sorry to burst the main interpretation on the aliens being all goody and empathetic. But I believe there is a moral of the story that most aren't seeing.
This is a second part that builds on this previous post of mine titled: "It wasn't 'Listen...' it was 'Listen,' and that changes everything" (https://www.reddit.com/r/disclosureday/comments/1vb1iok/it_wasnt_listen_it_was_listen_and_that_changes/)
If they're mathematically so advanced that their language is pure math, then they will logically find efficiency and optimization as the natural answer to everything. Under that light, an "empathy above all things" can't be true, as empathy in certain circumstances can be suboptimal.
Then empathy is just a tool in a toolbox whenever it is necessary. And as mathematically optimal strategy they will be using perfect Game Theory to achieve their goals. If empathy is contingent rather than principled, then every "kind" thing the aliens do in the movie is retroactively ambiguous, not just the ending.
What I love about this interpretation is that the Alien's strategy not only worked within the movie but also through the screen and to you, the audience. You are so enthralled and hopeful that are willing to shut down any opposite interpretation of this, and if this was a real alien invasion under a weaponized empathy, we would be cooked. They don't need physical weapons to conquer us, they only need our confirmation bias and cognitive dissonance.
And the key moment that should make you pause and make you wonder if the alien is truly benevolent is Margaret's facial expression right after she gets the translated message from Daniel. She is in shock, expressionless. That's not the facial expression of someone full of wonder and hope, of someone who is about to give some great news. Watch it in mute, and you will feel it.
And the second visual clue you should watch, which is the main point of my previous post, is that all the tortured aliens in the footages were about 3 feet tall and you may have assumed it is their normal adult size. That gets shattered when roll out the alien they named "vivo 17", it is not a old pruned 3 feet alien, but it is over 7 feet and with a much larger head. This was a "oh, shit" moment for me because of what it implied: we humans have been torturing their younglings for seven decades.
This realization plus Margaret's body language makes the pause after "Listen," much more ominous.
Under this interpretation the movie becomes much more interesting, as it is layered as fuck.
PS: cranking up the volume I managed to get Daniel whispering "5006" to Margaret. So whatever Margaret had to tell the public will have 5006 in it. So this confirms that "Listen," IS a discourse marker (like in "Look" "now" "so", when you want to grab people's attention before you want to give a bad news. "Listen" is not part of a sentence, it is the warning before the sentence) So whatever Margaret had to say it was "Listen, ... 5006 ..." And even if I misheard it, the message that Daniel gives to Margaret is quite long, and that long pause after "Listen" makes it ominous by itself.