The Arch Linux community is one of the most toxic I know. First and foremost, there are members with tens of thousands of posts who become condescending and insulting when other members don’t dance to their tune. The Code of Conduct exists only on paper and is not enforced by the Arch leadership. This results in such behavior not only being tolerated but actively encouraged. Shame on them and shame on Debian for further encouraging this behaviour by inviting them to the DebConf.