I understand what you're saying. But I think it changes what it means to players to include fixing obvious bugs and exploits as being nerfs. "nerf" has a negative connotation. Even if what was being nerfed was not good for the game to leave it in, I would sympathize with people that were used to using it that would feel deprived of something. But I would always want to see an exploit fixed and have no sympathy to people being deprived of a riskless way to gain loot or xp.