This article on the The Verge about the changing social media environment resonated with me.
You could argue, I suppose, that this is just the natural end of a specific part of the internet. We spent the last two decades answering a question — what would happen if you put everyone on the planet into a room and let them all talk to each other? — and now we’re moving onto the next one. It might be better this way. But the way it has all changed, and the speed with which it has happened, has left an everybody-sized hole in the internet.