You can dislike whatever you want, but i tire of this "predictable = bad" mindset.
You do know it was "predictable " because it was a reoccurring theme of the arc, right? As if the author was leaving crescendoing crescent crumbs to lead the reader to the thought of, & excitement for, Luffy's awakening so that when it happens the reader gets sweet sweet dopamine for narrative payoff,not bitches because they are burdened by burning brilliance that allows them to follow a "common cause it works" narrative structure. You try to subvert this basic tenet of writing too much and you get all but 2 M Night movies.