Your opinion is your opinion, whether I'd be inclined to agree or not. In today's anime climate, One Piece just hasn't adapted well. Anime is now seasonal, allowing the manga to get further ahead to avoid fillers, even shows like Dragon Ball are taking hiatuses so they can let the Manga get ahead. Which therein lies the problem with One Piece. Even with it's agreeably slow pacing, recaps and flash backs, it has still caught up to the manga in no time, I believe the anime caught up to the end of the Big Mom arc within about a month of the Manga finishing it too. Which means fillers and finding other means of slowing the anime down.