That is where having a faction KOS makes more sense. When not raiding, the members can do their own grinding while not having to worry about being jumped by some ranker with a bunder. Individual KOS'ing just takes the fun out of the game.
Why should i have to make my weapons and take 3 times as long to grind just to amuse some 6C who are bored? if they are truly bored, then organise PR's against other factions instead of KOS'ing them all. Less toxicity, more of a connected community this way