I’m not proposing this as an actual solution, it’s just a dumb idea. But if we dug a huge, wide hole at the bottom of the ocean, or maybe widened the Mariana Trench or something, could that extra space make the sea levels drop enough to keep the land from flooding?
Still more practical than musk rat going to mars though.
I say we still do that one, though. As long as he goes, personally.
With no return trip
With the failure rate SpaceX is hitting with their Starships, that problem would likely take care of itself.