I hardly think Assange is anything of a cypherpunk. He could easily have set up wikileaks as a .onion or .i2p rvice and done things that way. Hardly anything cryptography related. His big thing has mostly been about publicity, that is brining publicity to the leaks.
Nothing to do with cypherpunk here. By the way I havn't read the link.
You do know that Julian Assange is the original developer of nmap?
Here's what he wrote for another tool:
Surfraw provides a fast unix command line interface to a variety of popular WWW search engines and other artifacts of power. It reclaims google, altavista, dejanews, freshmeat, research index, slashdot, and many others from the false-prophet, pox-infested heathen lands of html forms, placing these wonders where they belong; deep in unix heartland, as god-loving extensions to the shell.
Also on his hacker past:
It's a bit annoying, actually. Because I co-wrote a book about [being a hacker], there are documentaries about that, people talk about that a lot. They can cut and paste. But that was 20 years ago. It's very annoying to see modern day articles calling me a computer hacker. I'm not ashamed of it, I'm quite proud of it. But I understand the reason they suggest I'm a computer hacker now. There's a very specific reason.
He's basically saying I'm a proud hacker but more than a cracker.