Spawn camping, IMO, is just really a means to an end, your not RPing in any way when you are spawn camping, you are simply trying to power level your character (which while distasteful to many members here, is often required to create the character you want to play.)
Id have to say im totally on Zanzibars side here, its isnt KSing unless you are exploiting a bug in the games mechanics to steal the ownership of a mob AFTER the 1st player has hit. This has been talked about over and over again in these forums. If the player who felt she was wrong has now left the communinty over one small act of (what in the most extreme would be called) impoliteness, then so be it, I doubt that will impact greatly on the community as a whole.
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PS, its really why some players can suck, not so much why PS can suck.