This isn't the first time he got banned, there's another thread not too long ago. Though that one was more controversial (more people happy he is banned). Going by my memory, I remember lately he been butting heads more with the mods on their views as lately the forum have turn to focus on biological mechanisms of women. I don't know if that the reason or not. Just that what was different since then and now.
I liked his views on women and sexuality (though his rationality saying it something about sperm and so on.... not so much...). It is not about leading with a overly dominant hand or the women just being a slave, but a balance created understanding to form the right boundaries and delegation of roles sounds like a good concept. Maybe that's not exactly what he meant (it should be close, I don't have time to look around right now), but he arounds that.
It is too bad he have a lot of other ideas that brings hostility.