Blóðbók

That phrasing was obviously hyperbole, since 100% dependence isn’t even a well-defined statement (you can not assign a simple percentage to degree of dependence). Using it as a point to argue against is misguided at best, disingenuous at worst. You should read it as “it is definitely dependent [to a high degree]” rather than “it is entirely dependent”.

In my uninformed understanding of humans and their history, unifications happen only in the face of crises and threats (and far from all the time, clearly). Maybe–hopefully–the world eventually makes common cause in order to stabilise the world as things spiral out of control in a few decades, but right now our species appears more concerned about whom gets to dictate what and how humans should live and behave like.