I don't think the contents of the CoC are as important as the content of the site. Left wing people dont hate free speech, they hate seeing posts by right wing people (often attacking them) and dont want to be in that space. And the same is true for right wing people, look at how censored Truth Social is. You want the vibes of the space to be comfortable for the people you want to attract. As for the CoC wording, hackernews's is pretty good for a well moderated high profile site with a specific vision: posts should be curious, don't be mean, etc.

The question was about repelling "left-wing nutsoes", not normal left-wing people.

I stand by that nutsos of any denomination aren't likely to be reading your CoC closely, and that the main use of one is to make your moderation more justifiable.

That's true. I don't see a point in CoCs because they don't actually change anything about the moderation you were already going to do.