RFH makes up ideas about how guys think and act, she then proceeds to use that same understanding to take potshots at male Twitter posts (basically the female version of manosphere anti-feminist accounts). There is no nuance or deep thoughts in her posts, she uses the same logic as incels who say things like: "All women are X", "Women think like Y", et cetera. It has the same groupthink persuasion where people who already agree with you, support you, and people who disagree with you think you are retarded. When you think further all incel/femcel logic ultimately concludes with "Kill all men/women".
Another thing with incels/femcels is that their reasoning sounds deranged in any real life setting, take that Twitter post for example, RFH is implying that the dude is a pedophile for disliking the make-up industry and that woman wearing make-up. Also RFH is fat, terminally online and has no relations with the opposite sex, basically an incel