When Mods say a ship or an idol or a CW is not allowed for an event, and we are spammed with over 70+ recommendations of it, including people QRTing tweets DIRECTLY saying that it isn't allowed in that event, then we simply cannot trust a shipdom, group, AU tag fandom and etc. to follow further event rules. A lot of this account is run on good faith of authors and readers - Mods cannot check every single work. Some days we get recommended over 600k+ words of fics. If we cannot have good faith, then we cannot trust that further event rules are going to be respected. When people are trying to tell event runners what there event rules actually mean and what is and is not valid to the event runners, there is no trust that it won't be a problem in the future. Thus, if there is no good faith, we as moderators and for safety of other readers, cannot on good faith allow that.