is one piece episode 979 filler?

Kyoshiro pledges allegiance to the Kouzuki Family, even mentioning the Mountain God Incident caused by Kin'emon. He reveals that he is Denjiro, and he has been working undercover for Orochi for the last twenty years.

He also explains that he freed 1200 prisoners from the Flower Capital, all of whom were willing to join the alliance. Then, Denjiro explains the new flyer given by Yasuie.

What the lines really meant was to remove the middle syllables of "Habuminato" (Habu Port), getting "Hato" (wharf). The correct rendezvous point was at the wharf of Habu Port all along.