There's only circumstantial evidence that Dorian is "Satoshi", and in fact, there are other candidates for which there exists much more such circumstantial evidence.
Actually I don't believe the article myself, it reads as if the reporter twisted the words and facts to fit her theory.
Someone posted earlier a paragraph that Newsweek deleted from that article, which explained how the reporter had found Dorian by combing through all the "Satoshi Nakamoto"s living in the US. Now, if you collect a hundred random people from some database, there is a good chance that you will find one who has a computer or electronics background (even if it is not cryptography). That person quite likely will have worked for some technology company (where else?) that did classified wor for the government (is there any company in the US that didn't?) Heck, even *I* worked for two such companies (Xerox and Digital Equipment).
Then you only have to pick a phrase or two from relatives and acquaintances that suggests he is the guy, and omit the cartloads of evidence that suggest that he isn't...
Well, I guess that a shitstorm is going on at Newsweek right now. Goodman just disappeared from tweeter when evidence in form of Dorian's posts written in incredibly bad english started to pile up. She did a VERY bad job and had this coming, as she has been exchanging emails with Dorian before speaking to him briefly - but obviously she couldn't use that emails as "evidence" in her piece because probably were written in that kind of english that SN would have NEVER used. Instead, she used ambiguos quotes from his family members to justify a similarity in writing styles that simply does not exist.
What an epic way to fuck up the relaunch of the printed edition of a magazine that once upon a time was believed to be an example of quality journalism. Really epic fuck up - and I'm enjoying it in a sort of twisted way.
And all in all this has been a tremedous publicity for Bitcoin. The SN myth is growing