I see this as more laughable than anything; it's like someone deciding to add a new card to the Major Arcana. I don't care if you call yourself God of The Tarot or The Ultimate Command in Zodiac; no one's going to buy it.

Basically Ophiuchus should have originally been included in the Zodiac according to how they divided the sky in ancient days, but for some reason they excluded it -- I don't remember why -- and therefore that's all the validity it has as a zodiac sign, that it should have been one from the get-go. Something like that, I remember reading on this years ago. It's always been more of a zodiac quirk factoid than anything.