Faolyn
(she/her)
This is definitely my problem with what's being described.my guess on their meaning given the context of the current conversation, is that until a player/GM specifically manifests something into the world to exist then nothing is existing, everything in the world that hasn't specifically been decided is a grey featureless blob of in potentia,
this typically grates against the type of person who values a world that exists independently of the players, one where even if the players weren't there to observe it still feels like it would still be doing it's own thing, a world where everything is where it is for a narrative reason and not just because the dice came up sixes so it now exists there because the player wanted/needed it to.
Now, I like the PCs to be important in the game. The game is, in fact, about their characters! They're the main characters of their show, even if there are other people who are more important or more powerful in the world, even if the characters end up being weak and ineffectual. But there is a world, and things do happen independently of them, and I find it very weird for this world to not exist until the PCs ask about it. To me, that's like a video game where the NPCs and locations don't even exist until the PCs load into the area.