Even if we agree with everything in your comment, the question is "Is the <1% of the time this happens a good enough reason the reject every project with a CoC?". Personally, I would answer no to this.
CoC's are inherently political, they say something about the people you have to deal with when contributing to the project. If you like that kind of people you'd see a CoC as a positive, but if you don't like them then you'd avoid CoC's. I don't see why this is so hard to understand.