This article is silly. Coming from a source other than the computer games, trading card game, novels, RPG, or manga, its content is not part of official Warcraftlore, but nevertheless has become part of the culture belonging to the World of Warcraft community.
Apparently linked to the then-upcoming 2.1.0 change where mining nodes aggros nearby mobs, a blood elfpaladin created this legendary thread on the US Forums:
Skinning a bear should aggro every bears
in a 40 yard radius. It makes sense, you are actually skinning their best friend.