Don't lose faith because of some tweets from a man who "works" for Shueisha, only Oda decides what to do, even the editor can't interfere.
First point: Mihawk and Blackbeard, any connection? No, 0 panel in manga about Mihawk and Blackbeard, the BB offensive doesn't exist in the manga (wtf really a man from Shueisha said this shit?) and the Payback war is caused by the remainder of the Whitebeard pirates not Blackbeard.
Second point: Blackbeard was looking for devil fruits ( Hancock or Ace devil fruits for example), he doesn't care about a swordsman or a black sword. ( I don't know if this is the mysterious "BB offensive"
)
Third point: Shiryu, can a man negged by injured old Garp be stronger than the Strongest swordsman, the only one with a black sword? Did Shiryu defeat the rival of a yonko ( Shanks) and when he didn't have his devil fruit? Lmao. Egghead Zoro with adcoc ( the strongest ability according to the WSC Kaido) to S-Hawk ( Mihawk clone with lunarian genes, so max durability or incredible speed): " you are actually a little more human than him". Mihawk is still much stronger than this Zoro, Shiryu without his devil fruit and with his devil fruit. Furthermore, Zoro declared his dream in Dressrosa+ the flashback ( in Wano) of his promise to Luffy after the defeat with Mihawk , he can't be already the WSS ( this in response to that Toei animator).
Last point: Greg: " are all of Oda's characters infallible in omnisciency at all times in all situation?" No, indeed according to the public opinion Mihawk is a subordinate of Buggy ( and we know this is a fake news) and he still has a higher bounty than him. Bounties in One Piece=danger index, so Mihawk is more dangerous than a Yonko ( this according to Oda not me
).
Conclusion: have faith, Mihawk is truly a monster and a top tier, Zoro has a huge mountain to climb
.