Very likely, yeah. FFR is the only community I regularly post to that has that specific rule, but I know there are some other communties that do as well. And even when the subject of a SFD rant isn't FFR, there's a not-insignificant overlap in the membership.

The rules at FFR are pretty similar to SFD except where they tend to be a bit more strict, so I usually default to FFR-mode just to be sure. :)