Why Are Fan-Made Trailers So (Often) Much Better Than The Official Ones?

“There are piss-taking projects like Honest Trailers and Literal Trailers, which point out the hyperbole in a lot of movie promos; those done in the style of the Shining remix, which recut trailers to make them different than their actual genre; and supercuts, which collect every instance of a certain kind of cinematic moment into one video.”