Earlier quoted context omitted.
I'm just having a hard time imagining someone who wants to be racist sexist xenophobe jerk to other people, but they saw you drafted a CoC last year in the root of your repository, so they won't... Or they were racist sexist xenophobe jerks, then you point out that "our community has a CoC", and they will stop. None of these things happen in real life.
Not every person who does something problematic is actively seeking to do so in order to hurt someone . Also, there are plenty of people who are looking for spaces that are "okay" with their views, and a CoC that makes it clear the space is not can absolutely make them avoid it. You are so focused on the strawman of problematic people being mustache-twirling villains trying to disrupt spaces they dislike, that you're…
Code of conduct is not about that. It's about how to behave. My community is not that special that you need a user manual on how to behave, you should have learned it by age 10, latest.
Technology Z meetup / user group is a space for people who are interested in Technology Z. Repository Y is a space for people who are interested in Repository Y.
If someone needs a CoC to figure that out, bad luck.
You want to start discussion about War X, vilify everyone just by being born in that country, please do it outside my repo / user group. Plenty of spaces you can do it and there, you'll be welcome to do so. Want to talk about evil black / white / DEI / right wing people, please also leave my group out of it.