I expected to see some kind of reminder to put your life (or our society) into perspective, based on the vast cosmological timeframes).
I think it's nice that it leaves you to draw your own conclusion, and doesn't preach or talk down to you, one way or the other.
But once someone starts preaching about how this means we are insignificant I lose interest quickly.
If we are the only sentient life in the universe, then we are extremely significant in the grand scheme of things. If there was/is a god or another alien civilization from another universe, they would certainly conclude that the evolution of sentient life is one of the top ten wonders of this universe.
I get tired of all this "insignificant" talk, its simply not true. Our minds are perhaps behind the wonder of life in the first place, but not that far behind, and life is one of the greatest things about our universe. How inanimate material started to think and move and do things. I think that is in no way insignificant, even if life only exists for a fraction of the time the universe will exist.