I never thought Oda actually disliked one of his "main" characters, but If Elbaf ends with Usopp biggest moment being a 2 pages speech after he got negged by a cat at the beginning of the arc and he couldn't be bothered to give him more for the island he been dreaming about for the past twenty years, it is truly over.
He will definitely give him something more though by the end of this arc, Sanji's quote this chapter means Oda is aware this island is important to Usopp. But it won't mean he doesn't think less of him than other Strawhats.
