plausiblefabulist,
I take trayburn as saying "you seem to have crafted a specific setting, with specific names of gods and previous empires, rather than, as in apocalypse world, left things open by saying 'there was an apocalypse, there's a psychic maelstrom -- decide in play what these mean'".
So that, for instance, there's no specific name of a character, institution, place(except the quasi-place "the psychic maelstrom"), or belief system which is a mandated part of AW as opposed to an example. Your game might have mudfish and someone named Dremmer, but then again it might not. In your AW:DA game, unmodded, there's a Xristos, there was an Empire of Eagles, etc.
In other words, AW:DA is not just a ruleset, it's a ruleset with a setting, the way that, say, Runequest came to you already boxed with Glorantha.
You are correct in your assumption of what I meant.
BTW, I probably mispoke when I said "bothered." There is some wonderful stuff here, it just caught me off guard as I did not expect it. I play Shadows of Esteren, which a 100% defined setting and I love that game. That was my fault for making assumptions of how the system was going to play out before even receiving the document.