I don't believe that is true. In fact the problem with the current rhetoric is that academia, (that is, the part of academia that can publish (thus the part that passes the review of its peers)) pushed its fringe identity politics rhetoric to the mainstream media, instead of the actual economic issues that cause the global Trumpism[1]. It's not a new phenomenon - academia always had control of the media rhetoric.
On the other side, conspiracies have always existed. From my european perspective, it actually amazes me how everyone is surprised and looking to russian conspiracies for explanations, when we have had this propaganda phenomena for a very long time under the cold war from both sides (and i doubt they caused a huge swing in democracies). Social media doesn't really make such a huge difference, because social networks have always existed, just not online, and just less transparent to everyone. I think Occam's razor would suggest it's much easier to explain your election results on economic terms (again, [1]) than doing a witch hunt.
1. http://www.realclearpolitics.com/video/2016/11/18/mark_blyth...