Social media platforms is a place where content is produced and shared, and blockchain isn't really popular for doing that sort of thing - it's mostly used for transactions.
Why can't it be? Blockchain has many more uses than just confirming the ^transactions^ quick, and everything that relates to data and especially databases (just like it does while producing blocks) needs blockchain and can empower it in a different way if the one implementing it knows better on how to set blockchain into this genre and get things going, then I believe that limiting blockchain to just a few uses doesn't seem to be fair enough in your thoughts.