Why does One Piece say that Luffy destroyed Mermaid Island?

One Piece's Mermaid Island, as the starting point for Luffy to enter the new world, the straw hat gang vs 100,000 enemies even tested the achievements of the straw hat gang in the past three years. When Luffy first entered Mermaid Island, Mrs. Xia Di, the sister of former enemy Aaron, predicted that the straw hat would eventually destroy Mermaid Island.

However, in the whole chapter of Fisherman's Island, Luffy not only failed to destroy Fisherman's Island, but also defeated the "new fisherman pirates" headed by Hodega Jones, and destroyed half the ark that hit Fisherman's Island. It can be said that Luffy not only didn't destroy the mermaid island, but saved it like a white beard in those days, and designated it as a straw hat site. It is more likely to pull the white star princess and Neptune to the side of the straw hat camp.

Then how do you explain that straw hats will destroy mermaid island? I think the meaning of destruction is not necessarily bad. Princess White Star once said that she wanted mermaids to live on land. When Luffy gets rid of all public opinions and becomes One Piece, if he makes White Star's idea come true, will Mermaid Island be empty and gone, that is, "destroyed" to some extent?

There is also a saying that at the time of the World Congress, a straw hat appeared, controlled by five stars in the holy land of Maria Gioia. So is it possible that Celestial Dragons wore this straw hat instead of Luffy to destroy Mermaid Island? As an ancient weapon, the White Star was once known to Celestial Dragons, and in order to consolidate its rule, Celestial Dragons must seize or destroy it, so Celestial Dragons will definitely wear a straw hat to visit Mermaid Island. This seems to be a bigger foreshadowing, and ODA should not fill the pit in the short term.