To be contrary; It seems like many of the posts on facebook / twitter (that aren't marketing / influencers) are people without social outlets; People join for nextdoor style posts or untactful political posts, or to be heard.

In one of my community groups; it's 90% business, but then someone decides to post an unrelated meme or political message (neither allowed by group rules) as if they don't have any actual friends to share that to.