Why did Luffy destroy Mermaid Island?

The Prototype of Red Earth Continent and the Ultimate Mission of Noah's Ark

According to the eighth chapter of Genesis,

Noah's Ark Ark finally docked at Mount Ararat in eastern Turkey. The Turkish language of Mount Ararat is: A? r？ Da? .

Agri, evolved from Turkish Agiri, means "like fire".

Red earth continent: an annular continent perpendicular to a large waterway that divides the world's oceans into two parts. It is famous for its red (like fire) soil cover.

Mary Gioia (Holy Land), located between the first half and the second half of the Grand Line, is the peak of the red soil continent and one of the two ways to reach the new world (the other is Fisherman's Island). The residents here are world aristocrats (Celestial Dragons).

There are only two ways to reach the new world, Mermaid Island and Mary Gioia. From the beginning, Oda told us that there is a communication of fate between the two! !

So the final view is that the prototype of the red soil continent is Mount Ararat, and Noah's Ark finally stops at the top of Mount Ararat, which symbolizes that the top of the red soil continent is Mary Gioia. The conclusion is that Noah of Mermaid Island will stay in Mary Gioia at last. . .

In this way, after 1 year, Fisherman's Island will be destroyed, and Noah will take the residents of Fisherman's Island to the Holy Land! !

The fisherman and Celestial Dragons, the final outcome of op will show the biggest contradiction in the op world.

Therefore, Luffy may "destroy" Mermaid Island, resulting in the above situation, allowing fish and mermaids to live normally on land.

It's just a kind of reasoning and speculation. As for the details, it depends on how WT writes it.