It is a great movie; i will consider it one of the greatest horror movies I have watched, but i won't recommend it to everyone.
I will say it this way: if you are not easily sympathetic with characters in a film, you won't like this movie. You will say it is 'overrating", "boring", "making no sense", because you don't invest in this movie psychologically. If you don't give a damn why characters say the things they say and do the things they do, you will not connect the dots and know that the whole movies have been well-crafted.
The director, Ari Aster, is great at making personal movie, and it is also a very personal movie to me.