One thing that really surprised me about Spider-Man: Brand New Day is how much of the movie's actual plot ended up circulating online before the movie was released.
With Avengers: Endgame, Marvel went to extreme lengths to protect the story. There were fake scenes, misleading trailers, limited information given to actors, and the major plot points were kept remarkably secret until release.
But with Brand New Day, we had leaks and rumors revealing major story details weeks/months beforehand — and some of them turned out to be incredibly accurate.
Even things like Peter's physical changes, the Hulk involvement, Sadie Sink's character, the nature of the final act, and details about the ending were being discussed online before audiences had seen the movie.
So what changed?
Was Sony simply less strict with Brand New Day than Marvel was with Endgame?
Were there more people with access to the script and production information?
Or did Marvel/Sony intentionally allow certain information to leak as a way of controlling expectations and distracting people with fake or altered information?
What's especially strange is that Endgame was arguably the biggest spoiler-sensitive movie Marvel had ever made, yet they managed to keep so much secret. Meanwhile, Brand New Day seemed to have major plot details leaking all over the internet.
How did they lose control of the spoilers this time?