Which is good, but may not potentially scale up - if we were desalinating 5X, 10X as much seawater, it seems unlikely we could make use of that much salt, and would have to bury it or dispose of it some other way.

People are considering using salt as a building material now:

https://www.archdaily.com/994769/could-salt-be-a-material-of...

When you have a practically free resource which is waste from a large scale industrial process, cottage industries to make use of the free waste sometimes pop up. It's a solvable problem.

Then your house melts with the rain

Article talks about that kinda. You have to read at least halfway through it.

Look what you've done! I'm dissolving, dissolving! Ohh, what a world.

And it’s not just salt. Other chemicals can be harvested from that brine before you need to dispose of the leftovers, e.g. magnesium carbonate. I know because I run a climbing company that sells chalk (MgCO3) from that production pathway.