Having said that, I personally don’t like social media at all (say someone with over 5,6k posts here), but I do think that the forum could find a way to interleave with them in a beneficial way, understanding how a large part of the world’s population communicates nowadays through these channels (as opposed to a forum style, which is rather different).
On social media, people often share images, status, tweets and funny videos. I rarely see social media users write a long and thoughtful status (on Facebook). Twitter has short character limitations for tweets. There are good Facebook status but those users and those status are not commonly to see.
It is caused by the social media origins. Why Mark Zurkerberg created Facebook years ago? I think Facebookers use Facebook in the way Mark want.