politely clearing throat
This is not the first time you have asserted that you are trying to regulate something that was not really a large problem anyway.
If you had said “From now on, “goose tatooing” is forbidden. There will be NO references to, instructions on, or links to other websites involving the subject of goose tatooing.”
Most posters would be asking “WTF? When was this a problem?”.
Instead, we have, what seems to be, quite a non-significant number of posters claiming that they feel that they are now going to be impacted in their BBQ-Pit posting style. (I don’t feel that I am one of them. My posting history is my cite.)
I don’t think that it is unnatural for people to try to understand the reasoning behind what may be a “new” rule (or at least a return to enforcement of a previously unenforced standard). This understanding may make it easier (on a practical level, not an emotional one) to comply more fully with your wishes.