This is a great art film.
Like any art film, there will be a number of unperceptive people who rate it low.
Just go watch your Avengers.
The dialogue and scripting are superb. Masterful and innovative direction. It's amazing what Gaspar Noé is able to pull off here.
You see a chaotic and contentious film shoot play out before your eyes.
It's very well done. Very engaging. Unusually for an art film, everything is easy to understand until the end.
The characterization, acting and dialogue are on point. The dialogue is especially good. The film flows well and carries a sense of realism.
Now there is a photosensitive sequence. A number of people who would otherwise like this film will slam it for the photosensitive sequence. A number of people will choose to respond to it with annoyance and dismissal.
If you are watching a Gaspar Noé film you should expect it to be uncomfortable in some way. Did I find the photosensitive sequence uncomfortable? Yes. Did it push my boundaries? Definitely, but that is a good thing! And it really makes the film.
Apart from the artistic experience, this film explores themes of exploitation and dark aspects of the film industry. There's alot of commentary going on. But it's done well and doesn't get in the way of the story playing out.
The ending is mysterious and ambiguous. Gaspar Noé said that his films are meant to be experienced not analyzed. That is important to note here. The film is not meant to be fully understood, it is about the artistic experience, emotion and the meaning between the lines.
I found it to be highly effective.