I have another answer: They had a lot of paladin testplayers whining that they don't do as much damage as the barbarians, so they needed a feat to make up for it (at least for charisma paladins).
Nope, it hasn't been errataed. This is one place where the FAQ and the book are in explicit disagreement, so you have to decide which way to go. My group uses the FAQ system, since it works better for us.
