What was seen with shadowlands was that domination magic originated from the primus. Obviously then you could say he was the one crafting frostmourne. Arthas resisted domination just as much as he fed into his own intuition. Starting with the abominations of stratholme. Nerzhul used kil'jaeden as a pawn in retrospect, especially the events of wc3, big dick move by the dreadlords? Cannot be judging by the layout of sod, remnant of nerzhul was a prisoner in sanctum, just like garrosh spirit.
Not that they did it for positive world reasons, maybe they did, but some story elements could fall either direction?