Ninety minutes of atmosphere and one very bad decision
It holds together until the last reel, and then it explains itself.
The trailer went up at 9am with no warning and no press embargo, which is usually a sign a studio is either very confident or hoping nobody has time to look closely.
What you get is ninety seconds of montage: a suburban street, a hallway, the mask in three separate shots, and a title card. No dialogue beyond a single line delivered off-screen.
Two shots are worth stopping on. At the thirty-one second mark there is a practical gag, done in camera, and it is the only moment with any weight to it.
None of that is fatal on its own. Trailers get cut before a film is finished, and a first teaser is a marketing document rather than a statement of intent.