I saw the gatekeeper comment as being more related to the natural processes of diamorphic species. Take for example your statement below. This very much implies a "gate" and that women are making choices to keep that gate closed for some men. Just because a person is not entitled to what is behind that gate, doesn't make that gate less real. If anything, it enforces the analogy in the fact that gates do exist in real life to keep out those who are not entitled to what lies beyond them.
"Incels mistakenly think that the bedroom is one of these places, and that they are entitled to an equal amount of sexual attention as some other man."
"Incels mistakenly think that the bedroom is one of these places, and that they are entitled to an equal amount of sexual attention as some other man."