Going dark alone does not very often yield results - even if the right solution comes out getting others up to speed will remove any time gained before easily.
Was a kangaroo court, is a kangaroo court. And that is what's wrong about this to resolve issues using a CoC. Harassment is of course real, and being a supportive organizations that helps and supports a victim in legal action is a better way to go.
Going dark as a team is a different story.