That is mostly rubbish, I would believe Julian Assange, the guy who received the files, over anyone else. There was an analysis done on the files and it concluded that they were initially copied from the server via USB2, most likely to a flash drive, and to do that there had to be a person physically there. All of this Guccifer 2.0 is just another layer of smear, just like the whole of Russia gate, which the Dems are still trying to carry on with - it's obvious to anyone that is open minded.
I don't know the whole story, and I'm wise enough to know that, and you don't either, and you won't get anything close to an unbiased story from the daily beast. As with most media in the US, and most places to think of it, are left leaning and suffer from trump derangement syndrome - objective journalism is almost dead!