If they had a message, it would probably sound somewhat like this:
Messengers: "We have seen your kind and its ways. Humankind is capable of showing kindness in many ways and showing love towards one another. However we see great danger for your kind if you do not stop your destructive ways. The path you have chosen is a dangerous one, human."
Human: "I am aware there are dangers that lie ahead, and I stand ready in defense of those whom I care about. I have hope that one day our kind can put away their ways."
Messengers: "Your kind has a long way to go yet, human. Be careful on your journey and remember your purpose."
The beings are inspired by this music video: www.youtube.com/watch?v=UCAdjz…
3D morphs courtesy of: www.renderosity.com/mod/bcs/ve…
You do bring up an interesting point. However this is a projection based on how the artist would rather see these beings. It is merely a point of perspective.
If you were to ask me an honest opinion about extraterrestrials, based on the fact I have never seen one; There does seem to be a cloud of deception covering the entire phenomena.
Coming from a Christian background, the idea of otherworldly life is treated as a fact. There are many accounts of angels descending from the heavens, and appearing from out of spiritual realms, as well as demons that can manifest themselves and even take on the form of an angel and deceive.
However with that concept put aside this is merely one artist's concept, and any ideas portrayed are of that artist and not considered written fact about an actual extraterrestrial species.