NPCs and taunt

I am a little confused... I saw this thread which was talking about how we can't taunt the NPCs but then it was locked because it was a thread from Nov and someone brought it back to life. It seems as if it was locked because

Fix your macro. Righteous Defense works off NPCs now.
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What do you mean fix my macro? Did they change something that makes it not work anymore? The macro I use I got out of the sticky here on maintankadin...

change help in noharm
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Well I know that this wasnt working because it would not ever trigger a cool down. If I try to taunt a mob whose target of target is an npc absolutely nothing happens when I taunt.

World, do you mean I should change it to ?

correct sir
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Old macro says "Only taunt mobs and PCs, otherwise do nothing".

New macro says "OK, you can taunt NPCs now"
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