How Russia Pulled Off the Biggest Election Hack in U.S. History

This is a fascinating article. Not sure I understood all of it.

http://www.esquire.com/news-politics/a49791/russian-dnc-emails-hacked/

This particular paragraph has me a bit confused as it says The Intercept was involved in identifying hacked malware tools using unpublished NSA info they had from Snowden. If this is the case, why is Glenn Greenwald so dismissive of Russia's involvement in this? Why as a journalist is he not interested in how this data was obtained?

"In mid-August, when Guccifer and DC Leaks were making near-daily news, a third mysterious social-media account popped up out of nowhere. A group calling itself the Shadow Brokers announced that it had published "cyberweapons" that belonged to the NSA on file-sharing sites such as Github. The group said that it would soon hold an auction to sell off a second cache of tools. After a security researcher posted a link to a repository of the supposed NSA software, analysts flocked to the dump. Security researchers quickly discovered that the tools, a collection of malware designed to steal data from their targets, were the real thing. Crucially, The Intercept, a media outlet with access to the NSA files leaked by Edward Snowden, found a sixteen-character string ("ace02468bdf13579&quot in the Shadow Brokers' tools that was referenced in a top-secret, and previously unpublished, NSA manual. The connection proved the provenance of the Shadow Brokers' find.