The article itself explains it for you:

"The report provides no new evidence to support assertions that Moscow meddled covertly through hacking and other actions to boost the electoral chances of Donald Trump and undermine his rival, Hillary Clinton, but rests instead on what it describes as Moscow's long record of trying to influence the U.S. political system."


The whole story is based on the fact that the media lied for months that Trump had no chance, (fake news), and now are trying to deligitimize Trump and explain why they were so wrong. The reality is the Establishment thought they could bamboozle the poeple into coronating Queen Hillary but we were too smart to fall for it.