One reason it's long is because every single board game reviewer ever thinks they have to explain the rules of the game for 20 minutes. It's one reason I don't watch/read a ton of reviews. I have no clue why this is seen as necessary in the community; when you read a film review, nobody summarizes the entire plot. When you read a video game review, nobody tells you what all the controls do unless there's some cool gimmick they want to talk about. In a music review, nobody goes over every single lyric.
Has anyone who's been playing board games longer than me got a good explanation for this? I mean, instruction manuals exist, so if people want to know how to play they can look those up, right? When I watch a review I am far more interested in the reviewer's experience with and opinion on the game.