Debian's mailing list had a sharp edge back in the 90's, the last times I inhabited them for much time. And it still does. If it means anything, Constitution or not, the Gentoo mailing list in its heyday was the epitome of civility, in comparison. A breath of fresh air, and none of the arrogance toward noobies.
I am just an interested observer. It is remarkable to see this level of venom and spite about the systemd issue.