Řĭpster is banned. Fair enough, ripstér certainly deserved it.
But for better or worse, ripśter is a large figure in this scene, and there's bugger all chance of you changing that.
So adding his name to the swear filter just appears childish and petty. Are you going to add all the variations that people will use to circumvent it? Will you reprimand / temp-ban people who break the rule of not circumventing the swear filter, just to mention ripsteŗ? It's not his name that is offensive, it was his behaviour.