EJMR is a place where people can report sexual predators without fear of repercussions. It’s a place where people can talk openly about discrimination when they are junior (like me). With no such forum, I risk punishment for making my university look bad if I report such things. I have talked openly about discrimination and unfair treatment I experienced from hrm professors. I could not say any of it on EconSpark without hurting my professional career.
And the only evidence the AEA has is the language EJMR uses and objectifying comments. Sorry, everyone objectifies. If 70% of users are male, there will be far more posts objectifying women than men. It is a natural consequence of the majority being of one particular gender.