Whoever said this movie was funny has a twisted sense of humor because this is one of the more depressing movies of 2019 I've seen. I enjoy dark comedies and would have preferred Cuck to be that, it is not.
I don't feel like this movie is as profound as it leads itself to believe as it was most likely written through the lens of someone who is an outsider to many of the ideologies they are trying to portray. Sometimes it comes off as petty with how bad the movie wants you to react to Ronnie's character and certain scenes feel more convenient to the narrative the film is trying to spin as opposed to plausible (a date Ronnie has in the film and a scene were Ronnie is washing a parking lot come to mind.)
That being said, this movie isn't completely terrible; the cinematography, performances, and soundtrack are all satisfactory. However, once you scratch beneath the surface this movie feels empty and it's themes are there for shock purposes. The formula of Cuck is very similar to films like Taxi Driver or Falling Down except with the obvious political twist, which they milk hard. I feel like the intention of this movie is to further divide people instead of trying to create civil discussion.