Clearly the words of a person unfamiliar with the way computers used to be, prior to the development of the 'Personal' computer. Dumb terminals in an office building all hooked up to a central computer. If you were cutting edge enough to be working from home in those days you still are talking in terms of a dumb terminal connecting long-distance to a centralised computer.
Decentralised computing is about how you view the picture as a whole.
The processor in your laptop is a centralised device in the scale of you and your hardware, but considering you used to have to rely on the processor at the core of a corporations mainframe instead, all the people you know who are now using their own processors in their own devices, that's decentralisation of power, from the corporation to the individual.
Ultimately, the goal of true internet decentralisation is going to be the ability to hook yourself up to it without needing an ISP but, in the meantime, the fact that you can hook yourself up to your ISP without limitations is a good enough goal. Talk to a few users of old-school AOL customers or any other internet-early-days ISP, where they tried to create a closed corporate environment their users were restricted to in the hope they'd be able to spoon feed them a sanitized, commercial environment instead of the full open internet.
There may be value-added features of superNET which begin as distributed, or even centralised, server-based provisions, but the nature of SuperNET itself means that there is constant pressure to decentralise and find innovative ways in order to do so, which is a rather unique goal compared to mainstream corporate internet-service structures.