Quote from peteroupc »Review C.R. 800.4e: "If combat damage would be assigned to a player who has left the game, that damage isn't assigned." Thus, Puresteel Paladin doesn't assign combat damage to that player (review C.R. 510.1). And since no combat damage has been assigned this way, it isn't dealt either (under C.R. 510.2, only "combat damage that's been assigned is dealt"). And since no combat damage has therefore been dealt to a player, Sword of Feast and Famine's triggered ability doesn't trigger (C.R. 603.2).
Missed the 800.4e rule reference TBH.
Great explanation, thanks.
I was hoping the sword somehow still triggered to punish the unsporting but NVM.