And sometimes to the individual celestial disregarding that the host is there. Agreed. I disagree, to some extent. while it is true that we have gotten to know more Celestials by name the amount of those recently presented have been fairly low compared to what happened at the Celestials "prime" the only one I can think of that we were recently introduced to was Ashema the Listener... And that is some years ago now. Tiamut was around before Exitar was given the statement by Thor I believe.
Evolved to the Fulcrum's level of awarness as I read the scan, and that is probably wrong btw, is that some Celestials have evolved into Beings of Greater Power (greater then Fulcrums own perhaps?) but they is a failure because they haven't attained free will. Fact remains that we have never "seen" the Prime Celestial exceed the norm, because according to Kubik a normal Celestial can warp a entire Universe if he wishes.
The writers need to become more educated about the Characters they include . As mentioned Above I would disagree, but given what the Celestials are in the Universe we wouldn't seen them do what Kubik did so based on that line of thought, No we haven't seen any Celestials perform what the trinity you mentioned have, but again they can hardly be compared to the average Celestial.