I have no idea if it's even possible to have an opinion on it, final or otherwise. It's about as weird (and uncomfortable) as anything I've ever seen; equal parts disgusting and inspirational, hopeful and horrifying. And the ending is either one of the most life-affirming or cynical things ever. (Do those things even make sense together? No, not really. Hence, my dilemma.)
I do have an opinion (and probably a final one) on the film's score, though. It's fantastic. (And also, a really fine example of matching a film's themes, messages, and moods wonderfully well, while simultaneously refusing to sacrifice melodic and emotional content.
Right off the bat, you get that weird "saw" sound, so the film's bizarrity is evident from the first bars. And that never goes away, really (though it does go silent after giving us the first run-through of the theme). Somehow, the presence of the flute and the orchestra (who get a chance the recapitulate the theme by themselves before the saw pops back in) really softens the weirdness. Like the film's protagonists, the saw must find a way to exist in a conventional world, despite being primarily "other." And the orchestra must find a way to allow them to exist. All in all, a clever musical reinforcement of what the film's saying. (Or of what it might be saying, if I could figure it out. Also, I'm pretty sure "bizarrity" isn't even a real word, but using a non-real word to try and capture this almost-uncapturable film just felt right.)
Looking for something a bit heavier on the "off" side? Try the unmoored "Ankomst til Huset:"
Or "Fars Værelse." Yipes!