This tends to be my biggest issue with shared-continuity superhero comicdom. No one has the perspective they logically should after all this time because despite the illusion of a shared universe, every title exists in its own sort of "instance" of that universe where the writer has the luxury of picking and choosing what has and hasn't happened and what is and isn't canon for the particular sequence of events they've chosen to write.
I'm not advocating that writers be more diligent, though, oh no, I think American comics need to move way the fuck away from shared continuity, because for every time it serves to make a better story there are a thousand times it's an obstacle in between a creator and telling the story they want to tell.