" it was learned that Guccifer 2.0 did in fact slip up and failed to activate his VPN client and exposed himself as being ... in Moscow. This is a fact that is now accepted across the political spectrum."
That's far from the consensus (see “Why would diabolically skilled Russian operatives operate so sloppily?”).
The evidence of Russian hacking is either circumstantial (for example that hackers kept Moscow office hours because as we all know, hackers are famous for their 9-to-5 routine). Or the smoking gun has not been released by the consultancies the DNC is paying and government agencies who told us they had proof there are WMDs in Iraq.
Of the two links you post, the second refers to the first and both confuse Guccifer (Marcel Lazr Lehel who is currently in a Romanian jail) and Guccifer 2.0, the alleged Russian spy.
Now, obviously, there are going to be howls of "Russian Shill!" from ACs (see below) because I have deviated from the narrative. So, let me make it clear: it might be that the Russians did indeed hack the DNC. But the evidence that has currently been released is so weak there is at least the possibility that the whole story is an attempt to undermine the validity of the 2016 election.