This isn't difficult there is ice locked up at the caps during the Ice age we are now in. Either it warms up and oceans rise or glaciation and the oceans recede. This isn't difficult.
We are now in an interglacial period meaning between glaciation. The oceans if we like it not going to recede.
if you want to make money for your great great grand kids see if you can buy land in the shallow waters in the oceans near major cities.
He’s essentially asserting that there’s a LOT of cubic MILES of water at the equatorial bulge above mean average sea level that’s going to slosh around very destructively during a pole shift and/or other massive ‘natural’ disasters.
oh yeah in tropical climate cities.