Why did you think that?
Desalination is expensive in many ways. If it was a viable way of acquiring water (which it is in some places, like literal deserts) then these places would have already done it. Hence rising sea levels provide no additional access drinkable water.
"It's got what plants crave" is a line from his movie Idiocracy. It is directly relevant the discussion at hand, but it's also a zero-effort joke that contributes nothing new.
> low-effort jokes. It doesn't add information.
And then
> God forbid somebody makes a joke!
You're misreading what is being said.
Yes, we should probably power those plants from some renewable/sustainable source, but that's a different discussion for another day.
It's sad and crazy that this is still not changing. SA is a very sunny country.
That's why the explanation as if it was facetious gets the downvote.
Especially since it's not at all baseless. Outside of the subtropics rainfall is expected to increase. But drought length can also increase. It's complicated.