I remember when I first saw how people behaved on MySpace. Then when FB started to get big, and in the intervening years with Twitter, I really was able to "Grok", or intuitively understand how this platform would affect people. I saw it with friends and family. I saw it with the recent election.
I am continually vindicated in my choice to have never joined one of those "social networks", with the exception of LinkedIn, which I rarely log into or look at.
Some of the problems I have noticed with social networks, and primarily FB:
1. A "keeping up with Jones" type of fakery, where people are always trying to make themselves seem "larger than life"
2. A constant barrage of crap, whether cat videos, political rants or very unimportant status updates about how great a cup of coffee someone just drank was.
3. Very little of any interesting, intelligent or thoughtful discourse(See Number 2.)
4. A huge waste of time, in addition to all the other things in the modern digital world we have to deal with and respond to.
5. Fake News(and yes, this isn't some new "revelation" after Trump got elected. It's been going on for a while...)
6. Echo chamber and group thinking.
For all the acrimony and debatism that /. has, it is an infinitely more interesting place than FB.