Not everyone is going to like everyone else, and it has nothing to do with gender.
Some people are just not very likeable, others are very likeable.
Coraline based on my impression, is just not terribly likeable.
Github wants people they like, to be part of Github. How can you blame them?
People who don't get that, and go around writing long winded blogs of how they've been mistreated, and claim it has to do with some social justice issue, are unfortunately oblivious to what the real issue is.