Great atmosphere, terrible character writing.
Great visuals. Great atmosphere. Amazing acting. Holy hell at that opening.
But with all that said, my god the character writing was bad. It felt like straight up 70s/80s/90s cheese ball horror. Idiot kids making idiot calls. Witness a suicide and then a straight up murder? Nah it's fine. It's just these people's way of life. Totally cool. Let's stick around. Friends start vanishing after knowing these people are capable of murder? Oh it doesn't really matter. Hell one of the main characters literally says, "We don't associate as friends of his," when his buddy vanishes. Like dude no one is going to give a shit about a thesis when literally two of their friends have gone missing along with another couple. There is no fucking way anyone in their right mind would feel comfortable being an outsider among 20+ pagan people that are fine witnessing and inflicting human loss.
The movie builds such a tense atmosphere but every time a character decision is made I feel the urge to face palm. This is not how real people react to traumatic events. I would argue the only characters that seemed to act competently were the British couple that were murdered. Even then a rational mind would have never bought the whole "your boyfriend already left without you" claim and gone off with the cult. This is a red flag. The characters even hear the girl scream and make nothing of it. What was the point?
Then there's the cult. They're shown to be murderers, manipulators, and liars. So my question is why do they keep the farce going for so long? When the final arc begins the only two remaining people are Christian and Dani. The final day begins with the cultists lying about their sacred book to cover up the deaths of Josh and Mark. But why? Literally moments later they start the rituals and murder Christian. What the hell was the point of this? Why not drug the fuckers during breakfast? Why bother if they had the paralyzing agent to begin with?
Again, great atmosphere and acting, but jeez was it disappointing to get the same old incompetent protagonists. Also what the fuck was the point of the guy wearing Mark's skin? Like that was at night and didn't seem to have anything to do with the rituals. Pure shock value? It reminds of a scene from another overall great horror film-- It Follows. In that movie, the creature is said to constantly move towards its target. However there is one weird scene where it just stands on a roof as a naked man. This scene made no sense in the context of the story and felt like a shock value insertion.
Anyway, great atmosphere. Great acting. Bad writing. I'm definitely going to keep following Ari, but as of right now I'd argue Hereditary was definitely a few tiers better composed.