It's so effortlessly charming for its microcosmic approach to filmmaking. When the ending comes, an ending so indebted to the lore of film history, it flips everything on its head and charms your glasses off.
There's nothing like this movie.
I never cared much for the MCU, but this movie and the audience I saw it with sure did remind me why the whole thing bothers me. The movie repeats the earlier stories in an attempt to build on them, but to me, it just plays as a series finale episode that waxes too rhapsodic about the happenings of previous installments. Every time the audience screamed with excitement, I was reminded of how these aren't my movies in the way that they are everyone else's.
To be fair, though, it's mostly fun. Blurs the 3h marathon time with panache.