probably not.
unless the planet is water all the way down, I don’t think it’s possible to have life or even submerged landmasses that don’t have the chemical elements that can create salts. dead things would dissolve in the water and chemicals in rocks will leach into water over time.
now if this water planet is far enough away from the sun to freeze, sure. the frozen ice should be all fresh. I’m not aware of any salts that stay in frozen water ice. the stuff underneath the frozen stuff most definitely will be salty.
not a chemist or chemistry major but I’m using the word “salts” deliberately. there’s more types of salt than NaCl.
I honestly don’t think twitter will ever go away until all of a majority of all major sports teams and leagues, a majority of legislative body members, and major news and wire services have a sustained and active presence on bsky. it right now is literally coasting on everything that made it useful pre 2022 and every stupid fucking thing elon has done to make the twitter experience worse hasn’t done enough to cause a critical mass of people to jump.
once you see major popular twitter accounts like rex chapman, mark hamill, taylor swift and the like (and I say this not because of their politics but because of their massive follower base) regularly post on bsky you can probably start closing the book on twitter.