They're absolutely dripping in horror imagery, come on.
all the good girls go the hell is a whole video based around a fallen angel with flames surrounding them, dead black eyes, etc. We've literally had HHN originals similar to this (i.e. The Fallen).
hostage literally has a Nightmare on Elm Street homage and is incredibly reminiscent at times to the HHN14 commercial.
Bury a Friend's wiki literally talks about it being compared to things such as the films
Suspiria (2018) and
Get Out (2017),
[31][51] the television series
The Haunting of Hill House,
[51] and
Stephen King's 1977 novel
The Shining. It features needles, possessions, abduction, etc.
Listen to this description on her album artwork: "The singer had prepared sketches for the album cover which were inspired by the album's themes of night terrors and lucid dreaming, as well as Eilish's interest in horror films, specifically
The Babadook "
I can go on and on, but this ongoing discussion of Billie Eilish not being horror related at all is a joke. Dislike her music as much as you want, but base your critiques in reality.