I think you're forgetting that, in context, the Scions are fighting for the right to continue to that inevitable doomed end, and the one presenting those scenarios is Meteion, with the intent of proving the futility of all life.
We also only actually got one society that failed to achieve perfection in the Dead Ends. The first one we encounter was pretty alright until a completely random, widespread tragedy wiped them out. (Well, technically it left them in despair and Meteion decided it would be ethical finish the job). The second failed to reconcile the differences between themselves, ultimately splitting into two factions and ending their world in war. (Again, not entirely, Meteion simply decided to finish the job.) Only the last one achieved "perfection," and even then, you can pan the camera down and see that their world was destroyed getting to that point. (The problem here was actually that they had decided they had reached a stopping point, not that a true stopping point actually existed. Again again, Meteion took that desire for oblivion as consensus and wiped out the planet.)
Meiteion's premise was that continuing to live would inevitably mean encountering some wall that could not be overcome, therefore life itself was meaningless. The Scions' answer was simply, "We know." Everything Venat did was done to get a group of people in front of Meteion to deliver that incredibly simple answer.
So... Nihilism 101.
I approve of this combination.
/wave
This was fun. We should do it again when the story gives us a new existential crisis to chew on.
