Blackbeard has been lied his whole life! He's going to end up like Madara. In the recent chapter we learned that the Gorosei can change the name and disguise the real powers of Devil Fruits, it is very naive to believe that they will write on the books powers and abilities that could suppose a threat to them. The Yami Yami has never been perceived as anything particularly dangerous by the Gorosei.
I don't even know why it's stated to be the strongest fruit. Let's leave aside that it's part of the reason why Blackbeard is allowed to have another devil fruit since his abnormal body is also playing a role, you have that he can absorb pain, and attract users, and absord things like a black hole... but it can be easily disabled as we saw with whitebeard.
I'll give the benefit of the doubt because I believe he's got a darkness form like Amaru that's gonna be pretty broken but I'm not even sure if that's going to happen...
I am pretty sure that there has to be superior powers that aren't even contained in that devil fruit book. Maybe a fruit that doesn't to any of the 3 know categories, too.
I don't even know why it's stated to be the strongest fruit. Let's leave aside that it's part of the reason why Blackbeard is allowed to have another devil fruit since his abnormal body is also playing a role, you have that he can absorb pain, and attract users, and absord things like a black hole... but it can be easily disabled as we saw with whitebeard.
I'll give the benefit of the doubt because I believe he's got a darkness form like Amaru that's gonna be pretty broken but I'm not even sure if that's going to happen...
I am pretty sure that there has to be superior powers that aren't even contained in that devil fruit book. Maybe a fruit that doesn't to any of the 3 know categories, too.