So Deadpool, by some unknown process and in some manner completely unrelated to this other abilities (as we see other people with massive healing factors, cognitive disabilities of various types, cosmic awareness and outright psychics whom do not display his metaphysical knowledge) is able to perceive beyond the dimensional barriers of his universe and multiverse in order to perceive what can only be described as some higher more fundamental reality.

Through his knowledge and awareness of this "higher reality" he is able to perceive events he would otherwise have no knowledge of, perform feats that defy logic and physics, and manipulate reality occasionally for his own amusement to communicate with some unknown audience that he frequently seems to communicate with.

He however only habitually makes reference to the events, people, places, and businesses or concepts only centrally relevant either to his own acquaintances in the superhero community or for offhanded comedic jokes (again to some completely unknown audience only he seems to be aware of). Similarly he will never break reality in such a way to give himself tremendous advantage or significantly change his life circumstances (usually). If he does do so it is often incredibly briefly with his status quo being return near immediately after his amusement or immediate problem has been sated. Usually the former.

It then stands to reason that because he indeed has access to some form of advanced metaphysical knowledge even the likes of which the most powerful sorcerers and enlightened beings do not have access to... what precisely are his limitations in the use of this... ability, and why does he have those particular limitations?