I don't think the point of the article was that the banking system does not have all the issues related to the global financial system and fiat currencies. The author is not really denying that. What the author is basically saying that 99% of the users out there are incapable of using the security of Bitcoins properly, and hence it invalidates the security benefit that they offer. Sure, if you are a smart user who knows how to properly secure your Bitcoins in a cold wallet, and will not lose your private keys - you are fine. For anyone who has helped a technology illiterate parent/grandparent try to use an iPhone though, imagine trying to get them to handle their Bitcoin security correctly.