I can see "ill defined" causing problems. But isn't an explicit code of conduct more defined than none? (Assuming I'm reading that correctly from your comment.)

There aren't too many epithets floating around that offend me specifically. And I haven't heard anyone say I shouldn't/don't exist. So it's hard for me personally to feel the need for CoC and the like. But I'm all for policy that protects everyone against that kind of abuse -- which seems to be on the rise. Are there better alternatives?