I down voted you because I felt your comment was off topic to the comment you replied to. I do not see any reason the old CoC or no CoC at all would have preven

I down voted you because I felt your comment was off topic to the comment you replied to. I do not see any reason the old CoC or no CoC at all would have preventing banning that user. Just because you should assume good intent does not mean you cannot ban or give a talking to user who make sexist jokes. I see no paradox of tolerance here.