It's a role playing game. You can "/rude", you can "/silly", you can "/dance", you can "/train" and you can "/spit". And anyone offended can simply -ignore- the person who bothers them. Why remove a funny emote used often between friends?
Again, if anyone insults you, or bores you, or simply is someone you don't want to read\see anything about, you can use the IGNORE function already available in the game.
If that isn't enough, i'm extremely sorry about all the pain you will endure in your online experiences.
Also, explain again why it's only an issue on TBCc but it's not an issue on Retail?