I often wonder if they are so afraid of being seen as, to use their own insults, a cuck, beta, or simp; anything but the alpha they want people to think they are. They feel they must shout about it at every hint. I think it is similar to the demand that every LI be a virgin who has never been with male pixels in their lives, and female LIs cannot even play with each other on their own.
Seems to me, if the Alpha Male were more than a myth, they'd be secure enough in their superiority to not feel threatened by such trivial things like letting "their women" have lives of their own. It seems to show a fear of not measuring up.
(Any bets on how many facepalms I get for questioning the sacred myth?)