Ya know, there would likely be a whole lot less drama and more agreement if you had posted "When joining a group try to follow the lead of the player who put up the LFM" instead of "do not zerg my LFM". The first asks for reasonable respect to the person leading the group while the second tells people to stop using a playstyle (that is default for many) when joining your "mystery" group. One is possible and reasonable while the other is not actually feasible since no one knows which group is yours and what you actually mean by "zerg".