So at the point where you have a good-faith question about whether someone is violating the Code and harming the project, you must assume good intentions? Do you expect a sexist Bob to say out loud, in a project space, "Yup, I'm judging contributions on things other than technical merit" (especially when Bob can just tweet "Broads can't code lol" and it's defined as a thing you can't pay attention to in the project)?
Why not just replace the code with "No one can possibly behave poorly for the project, just believe everyone" and be done with it? Seems equally effective.