One problem with the current system that the article did not mention is that having a central party handle all the global financial transfers creates a big hand

One problem with the current system that the article did not mention is that having a central party handle all the global financial transfers creates a big handle for nation states to put leverage on. We saw this very clearly when the US government put pressure on VISA and mastercard to reject donations going to WikiLeaks. I remember watching that whole episode in disgust. With bitcoin, this is pretty much impossible.