This is completely and totally wrong. Mechanics do not ever become lore, unless there is a lore justification. PvP in Diablo has NEVER had any sort of lore justification intrinsic to it.
If this were true, chugging potions would be part of the lore of Diablo.
That's precisely why I stopped talking to Frisky about PvP. He doesn't seem to understand what exactly "lore" means. For some reason he's having a hard time differentiating between the game's story line and the game's mechanics. Two very separate things.