- Critical Dissonance: Initially, it appeared this would be the case, as the film received a Rotten Tomatoes score in the 90s off of its SXSW debut and was still highly rated heading into opening weekend. The film wasn't a hit with audiences, with a RT score of 46% and a C+ Cinemascore. As it turned out, however, mainstream critics proved to be as sour on the film as general audiences, and the RT critic score plunged to a much weaker 59%.
- Fridge Horror: You have four intelligent, homicidal zombies who may or may be in fact monstrosities from god-knows-where. And they have a means to slowly and subtly convert an entire army of fellow intelligent, and again, homicidal zombies. And no one knows they exist, which means that little family of zombies is now ground zero for the Zombie Apocalypse.
- Fridge Logic: Even if Gage is killed and brought back by the Sematary...what are the family's motives afterwards? Are they just to live as an undead family? Will they lure other people to be killed and brought back? Considering the Cold Open showing the door to the Creed house is closed as Jud's house burns down, it might as well imply the family will live in their home as an undead family.
- Special Effects Failure: The tanker scene, the burial ground, and the fog have some glaring green screens.
- There are some exceptionally awful shots involving a CGI rendition of Church (particularly during the scene where Ellie is trying to clean his matted fur and he swipes at her before giving a long hiss), which seems odd considering they had a number of actual Maine Coons on set to play the feline. This is justified, however, as the filmmakers didn't plan on using a CG cat at all the "stunt cats" playing Church simply could not be made to look vicious or evil no matter what the wranglers tried, instead trying to cuddle and nuzzle the actors in every scene. This is particularly notable in scenes involving Jason Clarke... all of Church's "actors" apparently loved Clarke, forcing many of the shots involving the real cats to end with them cropped out entirely (and there are several instances left in the film where it looks like Clarke is trying his damndest not to laugh out loud during scenes with the cat).
- They Wasted a Perfectly Good Plot: After going to all the trouble of switching the resurrected child to the older Ellie, and hinting at some interesting twists with her better understanding of her undead nature, the movie simply goes right back to the original's story as she becomes a psychotic murderer for no apparent reason.
- Probably worth noting is that we do get this kind of plot in the sequel to the original film, where the de facto antagonist is an adult who was brought back and has more knowledge of how the Sematary works and his undead nature. And even then he's mostly reduced to a psychotic murderer when all is said and done.
- The Un Twist: Ellie's death. Doesn't help that it's spoiled right on the trailers and the poster.
- The Woobie: Gage. He loses his older sister Ellie and, as a result, ends up having nightmares of losing his family. And later he has to witness his older sister come back wrong and terrorize his family. He ends up losing both his mom and dad at the end of the film and is doomed to live with his undead family for the rest of his life with implications he is likely next to be killed then come back wrong too.
YMMV / Pet Sematary (2019)