The error you made is that you imply that fake news is somehow related to lack of nuance, biased news, single viewpoint, downvoting news you you don't like or drama in general.

Fake News is is deliberate misinformation and hoaxes published with the intent to mislead in order to damage an agency, entity, or person, and/or gain financially or politically.

I hope you understand the difference. You didn't see the nuance.