How many people take "getting their news" seriously period?
I still get the printed local newspaper and the NY Times on the weekend. I get up early and usually see the delivery person drop off papers on our street. 10 years ago they stopped at most houses on my block, now it seems like they deliver to only a handful of houses.
Obviously this process started years ago with TV news as the alternate source, but with "news" available so easily online many people don't get the paper at all, and of them I would bet few are serious readers going through the whole web site to get the equivalent of paging through an entire newspaper and discovering stories and reading them (one reason I get the paper is I often find stories I missed online).
But nowadays, so many people are plugged into Facebook that they don't even have a pretense of reading the news, they just kind of click through links on major stories.
IMHO, I doubt these same people are factually less ignorant than they would have been 20 years ago (they may not have been newspaper readers then, either). What's really bad about is the echo chamber effect. Your "friends" on Facebook all have a similar world view, so you just end up getting hammered with the same reinforcing information.
What I think is curious in this election cycle are the number of "anti-Trump" posts by people I'm pretty sure don't have a single Trump supporter in their friend list. Why are they (repetitively) posting information on how horrible Trump is to an audience that already agrees nearly completely with them? I'm starting to think this isn't about being in favor of or against Trump per se, but some other kind of social reinforcement behavior designed to demonstrate to their friends how much they share a common world view.
It almost takes on a quality like a religious piety, like a testifying their religious faith in front of other believers. They're not trying to convince their friends to change their views, they're trying to convince their friends how *strong* their religious beliefs are.