No, Fishman Island was very shit.
As underwhelming as Kaido the hostage taker currently is, or Big Meme currently is, still Hody Jones is a worse trash, least interesting villain, treated like punching bag.
His gang are complete trash too.
Too bad, fishmen which were hyped since Arlong Park arc, are treated as fodders to show off the results of Straw Hats' timeskip training.
Another fail of Fishman Island is, Oda mentioned Fishman Karate Dojo and Mermaid Cafe several times before timeskip. Yet Oda completely removes Fishman Dojo during the arc.
Then the trash scene of Fishman Island villagers all unite together, crying together "save us Straw Hat, save us Straw Hat, save us Straw Hat" then Luffy made an appearance from inside shark's mouth and everyone cheered on him. That scene is really trash and embarassing to watch.
I find the flashback "Shirahoshi saw Hody Jones killed her mom but kept silent about it because reasons" pretty dumb too.
The saving parts of the arc is the ending, Jinbe telling what happened in the world during 2 years timeskip, and Big Mom made a scary appearance in silhouette. Which are not directly related to Fishman Island arc at all.