No, it's simply evolving. Right now there's a lot of excitement about the platform and potential. Eventually we'll grow out of this phase, and we'll start seeing more breadth of content. Unlike reddit, where content posted in lesser traffic'd categories get bumped, here everything seems to be on a level playing field. Perhaps at some point in the future we'll see features implemented to help get more diverse content more visibility.
It's just turning into a competition on who can post the best blog about steemit. You don't see people on facebook constantly talking about facebook..