Carl-Daniel,
Thank you so much for your message! I know you don't post to the mailing list often, I appreciate you took the time to do this!
Of course I want flashrom to be a safe place for everyone. And everyone else wants this too!
You are very welcome to send a patch to convert the Friendliness wiki page to our new sphinx docs, so that it can be added to the new website. You haven't mentioned any specifics in your message: who were the people you worked with, which problems were you solving, and which common codes of conducts were taken as examples. But I am sure you would incorporate all that in your patch. Also of course, please add everyone who is interested to the patch.
Few things I would mention from my side. I was actually looking closely at the Friendliness page recently. It seems unfinished, there is a todo in the middle (sitting there from 2009). Some parts of it belong to the Development guide, and could be updated there, if needed at all. Some other parts can be better placed on the Contacts page. It would be great if you can incorporate all that in your patch. In any case, send a patch, add reviewers and then we will have a look!
About Code of Conduct: this is established and standard terminology, and a project needs one. However the content is in our hands, and this is exactly why there is a patch now under review. People are already reviewing, adding comments, and you are very welcome to add your comments as well.