I feel like a lot of people who dislike or outright hate this book do not quite understand its horror. It isn't meant to be a twisty, mysterious story about a goodhearted, charismatic heroine taking on the evils of new age Silicon Valley corporate culture. It is about cult tactics, about how one person can delude themself into believing that a workplace is a family, and the subsequent downward spiral into becoming completely cut off from anything outside of work. 

It's certainly not perfect, and it isn't always subtle. But it is very easy to misinterpret or write off as 'preachy'.

And anyway, the movie is a fucking trash fire. The movie sanitizes the horror entirely and makes it into a "protagonist-saves-the-day" moment when it really isn't supposed to be.