Haven't seen and can't say about it specifically but usually these kinds of movies that are dark just end up falling short or seemingly trying to impress me one way or another, I felt that way about Get Out and Pan's Labyrinth for example.
The Black Mirror series as another example just pissed me off. it's like I know what it is from the first minutes, boom , done, why is there another hour of this and then the twist happens and oh boy who could have guessed right?
I usually end up disliking what I'm being told I should like or told that at it's core is some "deep and disturbing" media.
Maybe I'm just a pretentious prick, lol or jaded to oblivion.