You actually have less ocean front property because the land mass shrinks.

That depends on the topography a bit.

He presumably means there's newly oceanfront property, too.

People sometimes bring up "why is Obama buying beach property if he believes in climate change" - this is why. It doesn't matter what he believes; it matters if he'll be meaningfully affected. They can all afford to lose money on a property in Hawaii a few decades into the future; it's abstract. The Trumps and the Obamas and the Musks of the world will just buy another property.

A billion people in places like Bangladesh don't have that luxury. We thought the Syrian refugee crisis was bad; that was just single-digit millions.