Putting your hands over your eyes and ears and trying to be "non-political" just means you're accepting the de-facto politics that emerge. It probably also means they're working pretty well, for you.
Of course, none of that means that heavy-handed, oppressive politicking used as a weapon to increase power is good. There are at least two opposites of doing something badly: not doing it at all, or doing it well. I'd argue that you can't _not_ do politics, so you should try to do it well.
There are a whole raft of people who truly believe that black/gay/trans/religious/whatever people are not worthy of treating as equals. That they shouldn't be granted the same rights as "normal" people and, in extreme cases, that they aren't really human.
A CoC says "These are the ethics of our community." It isn't Politics (which party you vote for), but it is necessarily political.
- Ethics are things the overwhelming majority of humans agree on.
- Politics are not.
Edit for 'edent' below due to rate limit:
Were you replying to someone else? My comment mentioned the majority of people agree on ethics. Racial, gender, sexual preference and religious discrimination isn't considered OK in most western countries.
Additionally, you're derailing the discussion by talking about discrimination. The entire reason this thread was started was because there's concern that that the CoC doesn't merely ensure ethics, but (as mentioned in the examples in this thread) has been used to harass people for what most humans would consider ethical behavior.