I guess I'm somewhat late to the game but I just heard about these words. From my understanding they're both considered slurs, but search "femoid" on here and it's women sharing screenshots from other sites or complaining about it - I don't see any men using it here.

But search "moid", and it's full of women using it on this site in a derogatory towards men. It's everywhere, and I learned about some pretty bad new subs.

I imagine one word is allowed and the other one isn't but that's just what I noticed.