It isn't even a matter of being a Moderator or anything. All the people who have said the same are regulars in the Forums and, just as I, have seen the dozens upon dozens of threads of people coming complain along the lines of "I was running a dungeon, rolled Need for OS and got banned." This has been happening for a long time, it's nothing brand new from a week ago.
Regarding the "negative consequence," I'll go on a stretch here and say that the DDs would rather wait a little longer in queue, than get it faster just to see the loot they need - for the role they were actively playing - taken be someone else. This policy began because people just rolling Need on everything they could to resell or disenchant was rampant, and players wanted assistance with that.