Bad Pacing - the overall narrative of the story has moved more in the past 50 chapters than in the past 500.
Mediocre Lore Reveals - the devil fruits come from people's dreams, the Gorosei are demons, Nefertaris are D. clan members, Shanks' father is the leader of a team of OP Celestial Dragons, the last ancient weapon, the Ancient Kingdom was futuristic, the Void Century was a great flood and it's happening again
Mediocre characterisation - Kuma, Bonney, Vegapunk, Saturn, Sentomaru, Stussy and yes, Kizaru
Underwhelming antagonists - 5 awakened zoan gorosei trying to steal nuclear weapons to destroy the planet, one of which tortured Kuma and Bonney all their lives
None of this is compelling to you? Imo this arc has been more compelling than the series has been in like 10 years.