I get your views and kind of agree as the explanation of the great main plotline that got me really curious on the movie didn't live up to the hopes. At the same time, I really enjoyed it and I'm a fan of Zach Cregger who knows how to make movies from a technical point of view building some really good tension. That also is worth a lot. This is also just one of those movies with a lot of metaphores that you can't take literally which isn't for everyone.