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?
Since I haven’t seen it mentioned…it might be the same attitude you displayed with the question OP. Immediately wondering which woman’s fault it is that a man is acting badly.
It’s the Freudian question. What every psychology treatment, let it be behavior, psychoanalysis, humanist… comes to: Can you talk about your childhood/parents? It’s not an invalid question, but not a responsible thing for an actual adult to do, make your parents totally responsible for your actions past adulthood.