one inconsistency doesn't make the book worthless. Also i think the spell i meant for atonements/sanctioned creatures, but i'm not sure
So how about the poisons and ravages? Poisons are always evil because they cause unnecessary pain, so here are new pois-*cough*- RAVAGES that cause even more pain, but they only affect evil creatures, for you exalted types. It also basically recommends Holy Word as a substitute for Detect Evil.
And more to the point, you cannot claim that V's actions are evil because the BoED said so if you only listen to the BoED some of the time.