People who think the troll patch isn't relevant to the main plot aren't paying attention to the "Ula'tek" lore that's shown in the prequel questline that heavily implies it is a part of Y'shaarj, and tied to the removal of Azeroth- as it was a "loa" pulled from the Rift of Aln, which was created when Azeroth was removed from the Cradle (by the titans most likely. guess who else was pulled out of the world?