I think the reason horror (counterintuitively) becomes popular in times of great strain and struggle, is that as a genre, it shows how people can face fear, but also the very many ways in which someone might show agency beyond obvious heroism.
I've been pondering on this. Years ago I had a blog post half-written about how zombie movies surge in popularity during times of plague and war, perhaps because they help us think through how we'd handle the apocalypse – but in a *fun* way!
In the introduction to the new edition celebrating the 50th anniversary of Stephen King's CARRIE, Margaret Atwood says: "Dubious female figures with quasi-supernatural powers seem to pop up when the struggle for women’s rights comes to the fore."
I also think that people find a catharsis and an understanding in it. It isn't lying to you. It's saying, directly to your face, sometimes things are bad and they don't get better for a long time, you aren't wrong, you aren't crazy. That's valuable in itself. People need an outlet.