Agreed. While some of the opinions are valid and useful, the idea of intentionally setting up weak authentication for an online bank account seems absurd. (Did he really suggest accepting an e-mail address in lieu of a password?)

Banks often have you confirm recent transactions on your account to verify your identity (over the phone, for example), making this data pretty sensitive. But even setting that aside, I think most people would like their balances and transaction histories to be pretty private. It only seems reasonable to me.