as a long time Farker*, what will constitute sexism will be the sniff test.
It's basically "if you aren't in the clique and know the moderators, your post will be scrutinized for context. If you're in the clique, you'll get a pass unless you are actively harassing someone in a thread."
So the enforcement will be like all enforcement; subjective and prone to favoritism, But, to be fair, this is their club so they can make the rules.
*-I'm getting a kick out of all these replies!