I still think the Werewolf looks fine.
Movie doesn't work and is kind of inert. A problem with a lot of movies trying to do realistic couple drama today - just in general - is that they're too afraid to make people look bad. Christopher Abbott being an unemployed loser with a vicious streak and Julia Garner being resentful of his unemployment and jealous of his connection to their daughter is good fodder for drama, but for drama to work, things actually have to go wrong. People suck despite their best efforts, and this movie needed to lean into that. This is a big part of The Fly, which is Whannell's big reference point - Seth kinda sucks in the middle! He becomes egotistical after the transformation and goes on a bender, Geena Davis gets sick of him, he throws her out, and she only comes back after she realizes how sick he's gotten.
Here, they forgave each other way too quickly, and once Abbott lost power of speech, there was nowhere to go emotionally, just endless heartstring tugging, which starts to lose its power when it happens so much.
There's some great scenes in there. The body horror, when it hits, is fun. The werewolf fight is a highlight. The greenhouse scene is great. It's Whannell's worst movie, but it doesn't work because it's ambitious and has a lot of ideas that it can't follow through on, and that's frankly a better kind of bad than we tend to get in a January Blumhouse flick.