This is a very common rehash of the "blockchain not bitcoin" perspective, and this indicates a lack of understanding of the purpose of bitcoin. Bitcoin/satoshi aren't being coy, though. The Genesis block contains the headline "Chancellor on the brink of second bailout for banks." Bitcoin was created as a democratized money that is outside of central control.
The author thinks that centralized control is not a problem because "there is no lack of trusted enough intermediaries in the financial/accounting sector".
This is something that bitcoiners strongly disagree with, with almost daily news of financial censorship going on, and irresponsible financial institutions continuing to be funded by quantitative easing[1] to engage in carry trade and other gambling (which is somehow considered less risky than a revolutionary new form of hard digital money).
The thing that I think a lot of people miss is that bitcoin is not a technology, it is a combination of technological innovations with economic innovations.
Its the incentives in bitcoin that are critical to the system... this is why "private blockchains" are silly. You might as well use Oracle with version tracking on changes.
Public blockchains, namely bitcoin, have the potential of being genuinely trustworthy in themselves, not based on hoping you don't have counterparty risk.
In 2009, it was the counterpary risks that really amplified the disaster-- all of those CDOs were written assuming there was no possibility of default.
The rest of the financial sector operates at the risk of financial censorship, but financial censorship is not unusual-- everything from banning people from doing business with each other to the elimination of ownership rights for corporate bonds in the GM case. It's not that uncommon.
With bitcoin there is no possibility of default, and very high resistance to financial censorship.
[1] Not to mention that arbitrary issuance of currency basically removes individuals ability to trust that currency in the first place.