Something I’ve always wondered is what kind of women were in the lives of incel men when they were young. Did they have a bad relationship with their mother? Did they lack sisters or other female family members? Or is their family situation irrelevant? Maybe some particular situation in their early years caused them to develop a complex around women?
Content consumption. A guy is lonely and goes to Google and types "how to talk to girl" or a variation of that, which is fine and normal mind you, and instead of the top search results being positive and genuinely helpful it's the beginning of a rabbit hole that directly leads to this kind of woman hating BS. Couple that with terrible male role models in that guy's life and there you have it.