I don't really understand the conclusion here. So the scenario is you trust dropbox with your files, and you trust them with a kernel blob implementing the filesystem, but you don't trust them to silently have accessibility rights?
replies(3):
The problem here isn't that you don't trust them to have accessibility rights, it's that Dropbox has phished your root password, stored it, and will continue to modify your system to meet it's desired operating criteria.
Direct from the DB engineer at top of thread.