Earlier quoted context omitted.
>I think a lot of what used to go onto blogs now goes elsewhere That's been true of me. A paragraph or three that I would once have done as a blog now slip neatly and easily into social media of various sorts. Going to try to do something about that next year but this year ended up crazy for various reasons.
Social media might be getting less attractive for that, though. Compare Reddit now to ten years ago, and you can see that even on more serious subreddits, everyone’s comments have become very short, often little more than a single line. If one posts a couple of solid paragraphs as a reply, one looks like an autistic weirdo info-bombing.
There's certainly a general trend towards shorter. At my last company, I was involved with our content folks (and created a fair bit myself). In the course of my time there, longer (say 3,000 word) whitepapers basically went away and most of the other content such as video almost universally got shorter based on monitoring what content people viewed/read and for how long.