It's really sad that in the age of unrestricted access to information public discourse is self-restricting to avoid wrong-think and dissenting opinions. If you look at the history of intellectual progress, much of it was exactly due to unpopular opinions. Now by having one you're risking your entire career and sometimes more. This is truly the dark age of the information era.
There is no era of Western history where unpopular opinions were more acceptable than today. In the past, dissenting opinions voiced loudly were often punished by blacklisting or excommunication or prison or death. Now, you get yelled at on Twitter and some companies won't work with you.
The problem isn't that ideologues are new, it is that ideology has seeped into the highest levels of education and culture. You have people across the spectrum of disciplines and stances afraid to contradict the received knowledge of the masses (or one of usually two sects).
This hasn't been the case for a LONG TIME.