Interesting point, I was going to touch on that issue in my comment but I am a little more optimistic on this position and I usually lean towards pessimism more often than not. I feel it is less human nature and more so mainstream indoctrination that leads to the dumbing down of people, true human nature is to seek and learn, discover and create, all of which is being frowned upon by the establishment who want good little obedient sheep to keep working and taxing.
All the free people, who have open eyes, who ask the questions and want to find the answers, will flow to the platforms that offer them the freedom to do this. The majority of intellect will flow to these platforms, steemit and co will have an influx of creativity and innovation. Facebook and youtube will have the market share of drones and sheep, who will continue to regurgitate and spew forth meaningless drivel until they realise their audience is shrinking and followers jumping ship.
More people are waking up every day and starting to ask questions and demand answers, it is inevitable as technology connects us like never before and wealth and income gaps are growing like never before. I haven't posted a link in a comment before so I don't know if this will work but here is something interesting about the number of new steemit users coming in to give you some hope.
RE: DTube - The YouTube Ρurge Is In Full Swing: Ρress For Τruth's Dan Dicks Receives Strike And Is Censored