My problem with questioning the DM directly is that it takes everyone out of the imagined world and makes plain that the DM is the one with the answers rather than presenting a world to be explored. It's player vs. DM rather than character vs. world IMHO.
to me phrasing the determination of "what is in my character's knowledge set" as "I try to recall..." vs "Do i know..." is not at all related to "player vs GM" or "character vs world". Both involve, invoke and are resolved by means of an interaction with the GM, not a difference such as "do i see the monster as an NPC or as the GM"?
IMO, understanding "I am not my monsters and my monsters are not me" is a very different thing than whether or not we use anti-jeopardy restrictions for PLAYER-To-GM communication in the game or just talk like we normally do.
ASIDE on the "Character vs world phrasing.
Now, there is a lot more vague case for "i am not my world" since in actuality, the totality of the creation of the world is in the GMs lap. i take responsibility personally for "my world" and the impacts it causes.
For example, if i decide "my world" and "the campaign" hinges around a massive undead rising event and that means i populate many encounters and most if not all the key encounters with undead - that may well significantly shift or skew the balance between say a Cleric PC and a Druid PC so much that the Druid players feel definitely like second class PCs due to the campaign encounters being so far off the "expected diversity of encounters" used when balancing the published materials. i would see that as MY failing as GM, not something i would generically be able to pass aside as "its you vs the world, not you vs me".
Not that I think that was what was meant but the wording hit close to a key element with me, albeit unintentionally i think.