In any non-politically-charged scenario, I might agree. Unfortunately, CoCs too often end up being a screen for abusers to hide behind. I have witnessed large projects adopt CoCs, then turn around and selectively apply them to people who express "wrong" ideas (either in code, issue trackers or on Twitter in unrelated discussions).

In this case, I'd prefer to either have something more objective, or nothing at all for such abusive people to hide behind.