[notfed]

That would mean each salt is about 36 bits. If you create 2^18=262k folders in your lifetime using the same algorithm and same password, there's a 50% chance one of the salts is dup'd.

Maybe we can wave this as good enough, but cryptography usually has higher standards.

[sneak]

These don’t refer to individual directories, only top level syncthing folders. Nobody in their lifetime is making even 1000 of these.